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jquery.dev.js
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jquery.dev.js
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/*!
* jQuery JavaScript Library v3.3.1
* https://jquery.com/
*
* Includes Sizzle.js
* https://sizzlejs.com/
*
* Copyright JS Foundation and other contributors
* Released under the MIT license
* https://jquery.org/license
*
* Date: 2018-01-20T17:24Z
*/
(function(global, factory) {
"use strict";
if (typeof module === "object" && typeof module.exports === "object") {
// For CommonJS and CommonJS-like environments where a proper `window`
// is present, execute the factory and get jQuery.
// For environments that do not have a `window` with a `document`
// (such as Node.js), expose a factory as module.exports.
// This accentuates the need for the creation of a real `window`.
// e.g. var jQuery = require("jquery")(window);
// See ticket #14549 for more info.
module.exports = global.document ?
factory(global, true) :
function(w) {
if (!w.document) {
throw new Error("jQuery requires a window with a document");
}
return factory(w);
};
} else {
factory(global);
}
// Pass this if window is not defined yet
})(typeof window !== "undefined" ? window : this, function(window, noGlobal) {
// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
// enough that all such attempts are guarded in a try block.
"use strict";
var arr = [];
var document = window.document;
var getProto = Object.getPrototypeOf;
var slice = arr.slice;
var concat = arr.concat;
var push = arr.push;
var indexOf = arr.indexOf;
var class2type = {};
var toString = class2type.toString;
var hasOwn = class2type.hasOwnProperty;
var fnToString = hasOwn.toString;
var ObjectFunctionString = fnToString.call(Object);
var support = {};
var isFunction = function isFunction(obj) {
// Support: Chrome <=57, Firefox <=52
// In some browsers, typeof returns "function" for HTML <object> elements
// (i.e., `typeof document.createElement( "object" ) === "function"`).
// We don't want to classify *any* DOM node as a function.
return typeof obj === "function" && typeof obj.nodeType !== "number";
};
var isWindow = function isWindow(obj) {
return obj != null && obj === obj.window;
};
var preservedScriptAttributes = {
type: true,
src: true,
noModule: true
};
function DOMEval(code, doc, node) {
doc = doc || document;
var i,
script = doc.createElement("script");
script.text = code;
if (node) {
for (i in preservedScriptAttributes) {
if (node[i]) {
script[i] = node[i];
}
}
}
doc.head.appendChild(script).parentNode.removeChild(script);
}
function toType(obj) {
if (obj == null) {
return obj + "";
}
// Support: Android <=2.3 only (functionish RegExp)
return typeof obj === "object" || typeof obj === "function" ?
class2type[toString.call(obj)] || "object" :
typeof obj;
}
/* global Symbol */
// Defining this global in .eslintrc.json would create a danger of using the global
// unguarded in another place, it seems safer to define global only for this module
var
version = "3.3.1",
// Define a local copy of jQuery
jQuery = function(selector, context) {
// The jQuery object is actually just the init constructor 'enhanced'
// Need init if jQuery is called (just allow error to be thrown if not included)
return new jQuery.fn.init(selector, context);
},
// Support: Android <=4.0 only
// Make sure we trim BOM and NBSP
rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
jQuery.fn = jQuery.prototype = {
// The current version of jQuery being used
jquery: version,
constructor: jQuery,
// The default length of a jQuery object is 0
length: 0,
toArray: function() {
return slice.call(this);
},
// Get the Nth element in the matched element set OR
// Get the whole matched element set as a clean array
get: function(num) {
// Return all the elements in a clean array
if (num == null) {
return slice.call(this);
}
// Return just the one element from the set
return num < 0 ? this[num + this.length] : this[num];
},
// Take an array of elements and push it onto the stack
// (returning the new matched element set)
pushStack: function(elems) {
// Build a new jQuery matched element set
var ret = jQuery.merge(this.constructor(), elems);
// Add the old object onto the stack (as a reference)
ret.prevObject = this;
// Return the newly-formed element set
return ret;
},
// Execute a callback for every element in the matched set.
each: function(callback) {
return jQuery.each(this, callback);
},
map: function(callback) {
return this.pushStack(jQuery.map(this, function(elem, i) {
return callback.call(elem, i, elem);
}));
},
slice: function() {
return this.pushStack(slice.apply(this, arguments));
},
first: function() {
return this.eq(0);
},
last: function() {
return this.eq(-1);
},
eq: function(i) {
var len = this.length,
j = +i + (i < 0 ? len : 0);
return this.pushStack(j >= 0 && j < len ? [this[j]] : []);
},
end: function() {
return this.prevObject || this.constructor();
},
// For internal use only.
// Behaves like an Array's method, not like a jQuery method.
push: push,
sort: arr.sort,
splice: arr.splice
};
jQuery.extend = jQuery.fn.extend = function() {
var options, name, src, copy, copyIsArray, clone,
target = arguments[0] || {},
i = 1,
length = arguments.length,
deep = false;
// Handle a deep copy situation
if (typeof target === "boolean") {
deep = target;
// Skip the boolean and the target
target = arguments[i] || {};
i++;
}
// Handle case when target is a string or something (possible in deep copy)
if (typeof target !== "object" && !isFunction(target)) {
target = {};
}
// Extend jQuery itself if only one argument is passed
if (i === length) {
target = this;
i--;
}
for (; i < length; i++) {
// Only deal with non-null/undefined values
if ((options = arguments[i]) != null) {
// Extend the base object
for (name in options) {
src = target[name];
copy = options[name];
// Prevent never-ending loop
if (target === copy) {
continue;
}
// Recurse if we're merging plain objects or arrays
if (deep && copy && (jQuery.isPlainObject(copy) ||
(copyIsArray = Array.isArray(copy)))) {
if (copyIsArray) {
copyIsArray = false;
clone = src && Array.isArray(src) ? src : [];
} else {
clone = src && jQuery.isPlainObject(src) ? src : {};
}
// Never move original objects, clone them
target[name] = jQuery.extend(deep, clone, copy);
// Don't bring in undefined values
} else if (copy !== undefined) {
target[name] = copy;
}
}
}
}
// Return the modified object
return target;
};
jQuery.extend({
// Unique for each copy of jQuery on the page
expando: "jQuery" + (version + Math.random()).replace(/\D/g, ""),
// Assume jQuery is ready without the ready module
isReady: true,
error: function(msg) {
throw new Error(msg);
},
noop: function() {},
isPlainObject: function(obj) {
var proto, Ctor;
// Detect obvious negatives
// Use toString instead of jQuery.type to catch host objects
if (!obj || toString.call(obj) !== "[object Object]") {
return false;
}
proto = getProto(obj);
// Objects with no prototype (e.g., `Object.create( null )`) are plain
if (!proto) {
return true;
}
// Objects with prototype are plain iff they were constructed by a global Object function
Ctor = hasOwn.call(proto, "constructor") && proto.constructor;
return typeof Ctor === "function" && fnToString.call(Ctor) === ObjectFunctionString;
},
isEmptyObject: function(obj) {
/* eslint-disable no-unused-vars */
// See https://github.com/eslint/eslint/issues/6125
var name;
for (name in obj) {
return false;
}
return true;
},
// Evaluates a script in a global context
globalEval: function(code) {
DOMEval(code);
},
each: function(obj, callback) {
var length, i = 0;
if (isArrayLike(obj)) {
length = obj.length;
for (; i < length; i++) {
if (callback.call(obj[i], i, obj[i]) === false) {
break;
}
}
} else {
for (i in obj) {
if (callback.call(obj[i], i, obj[i]) === false) {
break;
}
}
}
return obj;
},
// Support: Android <=4.0 only
trim: function(text) {
return text == null ?
"" :
(text + "").replace(rtrim, "");
},
// results is for internal usage only
makeArray: function(arr, results) {
var ret = results || [];
if (arr != null) {
if (isArrayLike(Object(arr))) {
jQuery.merge(ret,
typeof arr === "string" ? [arr] : arr
);
} else {
push.call(ret, arr);
}
}
return ret;
},
inArray: function(elem, arr, i) {
return arr == null ? -1 : indexOf.call(arr, elem, i);
},
// Support: Android <=4.0 only, PhantomJS 1 only
// push.apply(_, arraylike) throws on ancient WebKit
merge: function(first, second) {
var len = +second.length,
j = 0,
i = first.length;
for (; j < len; j++) {
first[i++] = second[j];
}
first.length = i;
return first;
},
grep: function(elems, callback, invert) {
var callbackInverse,
matches = [],
i = 0,
length = elems.length,
callbackExpect = !invert;
// Go through the array, only saving the items
// that pass the validator function
for (; i < length; i++) {
callbackInverse = !callback(elems[i], i);
if (callbackInverse !== callbackExpect) {
matches.push(elems[i]);
}
}
return matches;
},
// arg is for internal usage only
map: function(elems, callback, arg) {
var length, value,
i = 0,
ret = [];
// Go through the array, translating each of the items to their new values
if (isArrayLike(elems)) {
length = elems.length;
for (; i < length; i++) {
value = callback(elems[i], i, arg);
if (value != null) {
ret.push(value);
}
}
// Go through every key on the object,
} else {
for (i in elems) {
value = callback(elems[i], i, arg);
if (value != null) {
ret.push(value);
}
}
}
// Flatten any nested arrays
return concat.apply([], ret);
},
// A global GUID counter for objects
guid: 1,
// jQuery.support is not used in Core but other projects attach their
// properties to it so it needs to exist.
support: support
});
if (typeof Symbol === "function") {
jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];
}
// Populate the class2type map
jQuery.each("Boolean Number String Function Array Date RegExp Object Error Symbol".split(" "),
function(i, name) {
class2type["[object " + name + "]"] = name.toLowerCase();
});
function isArrayLike(obj) {
// Support: real iOS 8.2 only (not reproducible in simulator)
// `in` check used to prevent JIT error (gh-2145)
// hasOwn isn't used here due to false negatives
// regarding Nodelist length in IE
var length = !!obj && "length" in obj && obj.length,
type = toType(obj);
if (isFunction(obj) || isWindow(obj)) {
return false;
}
return type === "array" || length === 0 ||
typeof length === "number" && length > 0 && (length - 1) in obj;
}
var Sizzle =
/*!
* Sizzle CSS Selector Engine v2.3.3
* https://sizzlejs.com/
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license
* http://jquery.org/license
*
* Date: 2016-08-08
*/
(function(window) {
var i,
support,
Expr,
getText,
isXML,
tokenize,
compile,
select,
outermostContext,
sortInput,
hasDuplicate,
// Local document vars
setDocument,
document,
docElem,
documentIsHTML,
rbuggyQSA,
rbuggyMatches,
matches,
contains,
// Instance-specific data
expando = "sizzle" + 1 * new Date(),
preferredDoc = window.document,
dirruns = 0,
done = 0,
classCache = createCache(),
tokenCache = createCache(),
compilerCache = createCache(),
sortOrder = function(a, b) {
if (a === b) {
hasDuplicate = true;
}
return 0;
},
// Instance methods
hasOwn = ({}).hasOwnProperty,
arr = [],
pop = arr.pop,
push_native = arr.push,
push = arr.push,
slice = arr.slice,
// Use a stripped-down indexOf as it's faster than native
// https://jsperf.com/thor-indexof-vs-for/5
indexOf = function(list, elem) {
var i = 0,
len = list.length;
for (; i < len; i++) {
if (list[i] === elem) {
return i;
}
}
return -1;
},
booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
// Regular expressions
// http://www.w3.org/TR/css3-selectors/#whitespace
whitespace = "[\\x20\\t\\r\\n\\f]",
// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",
// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
// Operator (capture 2)
"*([*^$|!~]?=)" + whitespace +
// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
"*\\]",
pseudos = ":(" + identifier + ")(?:\\((" +
// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
// 1. quoted (capture 3; capture 4 or capture 5)
"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
// 2. simple (capture 6)
"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
// 3. anything else (capture 2)
".*" +
")\\)|)",
// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
rwhitespace = new RegExp(whitespace + "+", "g"),
rtrim = new RegExp("^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g"),
rcomma = new RegExp("^" + whitespace + "*," + whitespace + "*"),
rcombinators = new RegExp("^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*"),
rattributeQuotes = new RegExp("=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g"),
rpseudo = new RegExp(pseudos),
ridentifier = new RegExp("^" + identifier + "$"),
matchExpr = {
"ID": new RegExp("^#(" + identifier + ")"),
"CLASS": new RegExp("^\\.(" + identifier + ")"),
"TAG": new RegExp("^(" + identifier + "|[*])"),
"ATTR": new RegExp("^" + attributes),
"PSEUDO": new RegExp("^" + pseudos),
"CHILD": new RegExp("^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
"*(\\d+)|))" + whitespace + "*\\)|)", "i"),
"bool": new RegExp("^(?:" + booleans + ")$", "i"),
// For use in libraries implementing .is()
// We use this for POS matching in `select`
"needsContext": new RegExp("^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i")
},
rinputs = /^(?:input|select|textarea|button)$/i,
rheader = /^h\d$/i,
rnative = /^[^{]+\{\s*\[native \w/,
// Easily-parseable/retrievable ID or TAG or CLASS selectors
rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
rsibling = /[+~]/,
// CSS escapes
// http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
runescape = new RegExp("\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig"),
funescape = function(_, escaped, escapedWhitespace) {
var high = "0x" + escaped - 0x10000;
// NaN means non-codepoint
// Support: Firefox<24
// Workaround erroneous numeric interpretation of +"0x"
return high !== high || escapedWhitespace ?
escaped :
high < 0 ?
// BMP codepoint
String.fromCharCode(high + 0x10000) :
// Supplemental Plane codepoint (surrogate pair)
String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);
},
// CSS string/identifier serialization
// https://drafts.csswg.org/cssom/#common-serializing-idioms
rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
fcssescape = function(ch, asCodePoint) {
if (asCodePoint) {
// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
if (ch === "\0") {
return "\uFFFD";
}
// Control characters and (dependent upon position) numbers get escaped as code points
return ch.slice(0, -1) + "\\" + ch.charCodeAt(ch.length - 1).toString(16) + " ";
}
// Other potentially-special ASCII characters get backslash-escaped
return "\\" + ch;
},
// Used for iframes
// See setDocument()
// Removing the function wrapper causes a "Permission Denied"
// error in IE
unloadHandler = function() {
setDocument();
},
disabledAncestor = addCombinator(
function(elem) {
return elem.disabled === true && ("form" in elem || "label" in elem);
}, {
dir: "parentNode",
next: "legend"
}
);
// Optimize for push.apply( _, NodeList )
try {
push.apply(
(arr = slice.call(preferredDoc.childNodes)),
preferredDoc.childNodes
);
// Support: Android<4.0
// Detect silently failing push.apply
arr[preferredDoc.childNodes.length].nodeType;
} catch (e) {
push = {
apply: arr.length ?
// Leverage slice if possible
function(target, els) {
push_native.apply(target, slice.call(els));
} :
// Support: IE<9
// Otherwise append directly
function(target, els) {
var j = target.length,
i = 0;
// Can't trust NodeList.length
while ((target[j++] = els[i++])) {}
target.length = j - 1;
}
};
}
function Sizzle(selector, context, results, seed) {
var m, i, elem, nid, match, groups, newSelector,
newContext = context && context.ownerDocument,
// nodeType defaults to 9, since context defaults to document
nodeType = context ? context.nodeType : 9;
results = results || [];
// Return early from calls with invalid selector or context
if (typeof selector !== "string" || !selector ||
nodeType !== 1 && nodeType !== 9 && nodeType !== 11) {
return results;
}
// Try to shortcut find operations (as opposed to filters) in HTML documents
if (!seed) {
if ((context ? context.ownerDocument || context : preferredDoc) !== document) {
setDocument(context);
}
context = context || document;
if (documentIsHTML) {
// If the selector is sufficiently simple, try using a "get*By*" DOM method
// (excepting DocumentFragment context, where the methods don't exist)
if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {
// ID selector
if ((m = match[1])) {
// Document context
if (nodeType === 9) {
if ((elem = context.getElementById(m))) {
// Support: IE, Opera, Webkit
// TODO: identify versions
// getElementById can match elements by name instead of ID
if (elem.id === m) {
results.push(elem);
return results;
}
} else {
return results;
}
// Element context
} else {
// Support: IE, Opera, Webkit
// TODO: identify versions
// getElementById can match elements by name instead of ID
if (newContext && (elem = newContext.getElementById(m)) &&
contains(context, elem) &&
elem.id === m) {
results.push(elem);
return results;
}
}
// Type selector
} else if (match[2]) {
push.apply(results, context.getElementsByTagName(selector));
return results;
// Class selector
} else if ((m = match[3]) && support.getElementsByClassName &&
context.getElementsByClassName) {
push.apply(results, context.getElementsByClassName(m));
return results;
}
}
// Take advantage of querySelectorAll
if (support.qsa &&
!compilerCache[selector + " "] &&
(!rbuggyQSA || !rbuggyQSA.test(selector))) {
if (nodeType !== 1) {
newContext = context;
newSelector = selector;
// qSA looks outside Element context, which is not what we want
// Thanks to Andrew Dupont for this workaround technique
// Support: IE <=8
// Exclude object elements
} else if (context.nodeName.toLowerCase() !== "object") {
// Capture the context ID, setting it first if necessary
if ((nid = context.getAttribute("id"))) {
nid = nid.replace(rcssescape, fcssescape);
} else {
context.setAttribute("id", (nid = expando));
}
// Prefix every selector in the list
groups = tokenize(selector);
i = groups.length;
while (i--) {
groups[i] = "#" + nid + " " + toSelector(groups[i]);
}
newSelector = groups.join(",");
// Expand context for sibling selectors
newContext = rsibling.test(selector) && testContext(context.parentNode) ||
context;
}
if (newSelector) {
try {
push.apply(results,
newContext.querySelectorAll(newSelector)
);
return results;
} catch (qsaError) {} finally {
if (nid === expando) {
context.removeAttribute("id");
}
}
}
}
}
}
// All others
return select(selector.replace(rtrim, "$1"), context, results, seed);
}
/**
* Create key-value caches of limited size
* @returns {function(string, object)} Returns the Object data after storing it on itself with
* property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
* deleting the oldest entry
*/
function createCache() {
var keys = [];
function cache(key, value) {
// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
if (keys.push(key + " ") > Expr.cacheLength) {
// Only keep the most recent entries
delete cache[keys.shift()];
}
return (cache[key + " "] = value);
}
return cache;
}
/**
* Mark a function for special use by Sizzle
* @param {Function} fn The function to mark
*/
function markFunction(fn) {
fn[expando] = true;
return fn;
}
/**
* Support testing using an element
* @param {Function} fn Passed the created element and returns a boolean result
*/
function assert(fn) {
var el = document.createElement("fieldset");
try {
return !!fn(el);
} catch (e) {
return false;
} finally {
// Remove from its parent by default
if (el.parentNode) {
el.parentNode.removeChild(el);
}
// release memory in IE
el = null;
}
}
/**
* Adds the same handler for all of the specified attrs
* @param {String} attrs Pipe-separated list of attributes
* @param {Function} handler The method that will be applied
*/
function addHandle(attrs, handler) {
var arr = attrs.split("|"),
i = arr.length;
while (i--) {
Expr.attrHandle[arr[i]] = handler;
}
}
/**
* Checks document order of two siblings
* @param {Element} a
* @param {Element} b
* @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
*/
function siblingCheck(a, b) {
var cur = b && a,
diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
a.sourceIndex - b.sourceIndex;
// Use IE sourceIndex if available on both nodes
if (diff) {
return diff;
}
// Check if b follows a
if (cur) {
while ((cur = cur.nextSibling)) {
if (cur === b) {
return -1;
}
}
}
return a ? 1 : -1;
}
/**
* Returns a function to use in pseudos for input types
* @param {String} type
*/
function createInputPseudo(type) {
return function(elem) {
var name = elem.nodeName.toLowerCase();
return name === "input" && elem.type === type;
};
}
/**
* Returns a function to use in pseudos for buttons
* @param {String} type
*/
function createButtonPseudo(type) {
return function(elem) {
var name = elem.nodeName.toLowerCase();
return (name === "input" || name === "button") && elem.type === type;
};
}
/**
* Returns a function to use in pseudos for :enabled/:disabled
* @param {Boolean} disabled true for :disabled; false for :enabled
*/
function createDisabledPseudo(disabled) {
// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
return function(elem) {
// Only certain elements can match :enabled or :disabled
// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
if ("form" in elem) {
// Check for inherited disabledness on relevant non-disabled elements:
// * listed form-associated elements in a disabled fieldset
// https://html.spec.whatwg.org/multipage/forms.html#category-listed
// https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
// * option elements in a disabled optgroup
// https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
// All such elements have a "form" property.
if (elem.parentNode && elem.disabled === false) {
// Option elements defer to a parent optgroup if present
if ("label" in elem) {
if ("label" in elem.parentNode) {
return elem.parentNode.disabled === disabled;
} else {
return elem.disabled === disabled;
}
}
// Support: IE 6 - 11
// Use the isDisabled shortcut property to check for disabled fieldset ancestors
return elem.isDisabled === disabled ||
// Where there is no isDisabled, check manually
/* jshint -W018 */
elem.isDisabled !== !disabled &&
disabledAncestor(elem) === disabled;
}
return elem.disabled === disabled;
// Try to winnow out elements that can't be disabled before trusting the disabled property.
// Some victims get caught in our net (label, legend, menu, track), but it shouldn't
// even exist on them, let alone have a boolean value.
} else if ("label" in elem) {
return elem.disabled === disabled;
}
// Remaining elements are neither :enabled nor :disabled
return false;
};
}
/**
* Returns a function to use in pseudos for positionals
* @param {Function} fn
*/
function createPositionalPseudo(fn) {
return markFunction(function(argument) {
argument = +argument;
return markFunction(function(seed, matches) {
var j,
matchIndexes = fn([], seed.length, argument),
i = matchIndexes.length;
// Match elements found at the specified indexes
while (i--) {
if (seed[(j = matchIndexes[i])]) {
seed[j] = !(matches[j] = seed[j]);
}
}
});
});
}
/**
* Checks a node for validity as a Sizzle context
* @param {Element|Object=} context
* @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
*/
function testContext(context) {
return context && typeof context.getElementsByTagName !== "undefined" && context;
}
// Expose support vars for convenience
support = Sizzle.support = {};
/**
* Detects XML nodes
* @param {Element|Object} elem An element or a document
* @returns {Boolean} True iff elem is a non-HTML XML node
*/
isXML = Sizzle.isXML = function(elem) {
// documentElement is verified for cases where it doesn't yet exist
// (such as loading iframes in IE - #4833)
var documentElement = elem && (elem.ownerDocument || elem).documentElement;
return documentElement ? documentElement.nodeName !== "HTML" : false;
};
/**
* Sets document-related variables once based on the current document
* @param {Element|Object} [doc] An element or document object to use to set the document
* @returns {Object} Returns the current document
*/
setDocument = Sizzle.setDocument = function(node) {
var hasCompare, subWindow,
doc = node ? node.ownerDocument || node : preferredDoc;
// Return early if doc is invalid or already selected
if (doc === document || doc.nodeType !== 9 || !doc.documentElement) {
return document;
}
// Update global variables
document = doc;
docElem = document.documentElement;
documentIsHTML = !isXML(document);
// Support: IE 9-11, Edge
// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
if (preferredDoc !== document &&
(subWindow = document.defaultView) && subWindow.top !== subWindow) {
// Support: IE 11, Edge
if (subWindow.addEventListener) {
subWindow.addEventListener("unload", unloadHandler, false);
// Support: IE 9 - 10 only
} else if (subWindow.attachEvent) {
subWindow.attachEvent("onunload", unloadHandler);
}
}
/* Attributes
---------------------------------------------------------------------- */
// Support: IE<8
// Verify that getAttribute really returns attributes and not properties
// (excepting IE8 booleans)
support.attributes = assert(function(el) {
el.className = "i";
return !el.getAttribute("className");
});
/* getElement(s)By*
---------------------------------------------------------------------- */
// Check if getElementsByTagName("*") returns only elements
support.getElementsByTagName = assert(function(el) {
el.appendChild(document.createComment(""));
return !el.getElementsByTagName("*").length;
});
// Support: IE<9
support.getElementsByClassName = rnative.test(document.getElementsByClassName);
// Support: IE<10
// Check if getElementById returns elements by name
// The broken getElementById methods don't pick up programmatically-set names,
// so use a roundabout getElementsByName test
support.getById = assert(function(el) {
docElem.appendChild(el).id = expando;
return !document.getElementsByName || !document.getElementsByName(expando).length;
});
// ID filter and find
if (support.getById) {
Expr.filter["ID"] = function(id) {
var attrId = id.replace(runescape, funescape);
return function(elem) {
return elem.getAttribute("id") === attrId;
};
};
Expr.find["ID"] = function(id, context) {
if (typeof context.getElementById !== "undefined" && documentIsHTML) {
var elem = context.getElementById(id);
return elem ? [elem] : [];
}
};
} else {
Expr.filter["ID"] = function(id) {
var attrId = id.replace(runescape, funescape);
return function(elem) {
var node = typeof elem.getAttributeNode !== "undefined" &&
elem.getAttributeNode("id");
return node && node.value === attrId;
};
};
// Support: IE 6 - 7 only
// getElementById is not reliable as a find shortcut
Expr.find["ID"] = function(id, context) {
if (typeof context.getElementById !== "undefined" && documentIsHTML) {
var node, i, elems,
elem = context.getElementById(id);
if (elem) {
// Verify the id attribute
node = elem.getAttributeNode("id");
if (node && node.value === id) {
return [elem];
}
// Fall back on getElementsByName
elems = context.getElementsByName(id);
i = 0;
while ((elem = elems[i++])) {
node = elem.getAttributeNode("id");
if (node && node.value === id) {
return [elem];
}
}
}
return [];
}
};
}
// Tag
Expr.find["TAG"] = support.getElementsByTagName ?
function(tag, context) {
if (typeof context.getElementsByTagName !== "undefined") {
return context.getElementsByTagName(tag);
// DocumentFragment nodes don't have gEBTN
} else if (support.qsa) {
return context.querySelectorAll(tag);
}
} :
function(tag, context) {
var elem,
tmp = [],
i = 0,
// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
results = context.getElementsByTagName(tag);
// Filter out possible comments
if (tag === "*") {
while ((elem = results[i++])) {
if (elem.nodeType === 1) {
tmp.push(elem);
}
}
return tmp;
}
return results;
};
// Class
Expr.find["CLASS"] = support.getElementsByClassName && function(className, context) {
if (typeof context.getElementsByClassName !== "undefined" && documentIsHTML) {
return context.getElementsByClassName(className);
}
};