core.js 9.7 KB

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  1. /* global Symbol */
  2. // Defining this global in .eslintrc.json would create a danger of using the global
  3. // unguarded in another place, it seems safer to define global only for this module
  4. define([
  5. "./var/arr",
  6. "./var/document",
  7. "./var/getProto",
  8. "./var/slice",
  9. "./var/concat",
  10. "./var/push",
  11. "./var/indexOf",
  12. "./var/class2type",
  13. "./var/toString",
  14. "./var/hasOwn",
  15. "./var/fnToString",
  16. "./var/ObjectFunctionString",
  17. "./var/support",
  18. "./var/isFunction",
  19. "./var/isWindow",
  20. "./core/DOMEval",
  21. "./core/toType"
  22. ], function(arr, document, getProto, slice, concat, push, indexOf,
  23. class2type, toString, hasOwn, fnToString, ObjectFunctionString,
  24. support, isFunction, isWindow, DOMEval, toType) {
  25. "use strict";
  26. var
  27. version = "3.3.1",
  28. // Define a local copy of jQuery
  29. jQuery = function(selector, context) {
  30. // The jQuery object is actually just the init constructor 'enhanced'
  31. // Need init if jQuery is called (just allow error to be thrown if not included)
  32. return new jQuery.fn.init(selector, context);
  33. },
  34. // Support: Android <=4.0 only
  35. // Make sure we trim BOM and NBSP
  36. rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
  37. jQuery.fn = jQuery.prototype = {
  38. // The current version of jQuery being used
  39. jquery: version,
  40. constructor: jQuery,
  41. // The default length of a jQuery object is 0
  42. length: 0,
  43. toArray: function() {
  44. return slice.call(this);
  45. },
  46. // Get the Nth element in the matched element set OR
  47. // Get the whole matched element set as a clean array
  48. get: function(num) {
  49. // Return all the elements in a clean array
  50. if (num == null) {
  51. return slice.call(this);
  52. }
  53. // Return just the one element from the set
  54. return num < 0 ? this[num + this.length] : this[num];
  55. },
  56. // Take an array of elements and push it onto the stack
  57. // (returning the new matched element set)
  58. pushStack: function(elems) {
  59. // Build a new jQuery matched element set
  60. var ret = jQuery.merge(this.constructor(), elems);
  61. // Add the old object onto the stack (as a reference)
  62. ret.prevObject = this;
  63. // Return the newly-formed element set
  64. return ret;
  65. },
  66. // Execute a callback for every element in the matched set.
  67. each: function(callback) {
  68. return jQuery.each(this, callback);
  69. },
  70. map: function(callback) {
  71. return this.pushStack(jQuery.map(this, function(elem, i) {
  72. return callback.call(elem, i, elem);
  73. }));
  74. },
  75. slice: function() {
  76. return this.pushStack(slice.apply(this, arguments));
  77. },
  78. first: function() {
  79. return this.eq(0);
  80. },
  81. last: function() {
  82. return this.eq(-1);
  83. },
  84. eq: function(i) {
  85. var len = this.length,
  86. j = +i + (i < 0 ? len : 0);
  87. return this.pushStack(j >= 0 && j < len ? [this[j]] : []);
  88. },
  89. end: function() {
  90. return this.prevObject || this.constructor();
  91. },
  92. // For internal use only.
  93. // Behaves like an Array's method, not like a jQuery method.
  94. push: push,
  95. sort: arr.sort,
  96. splice: arr.splice
  97. };
  98. jQuery.extend = jQuery.fn.extend = function() {
  99. var options, name, src, copy, copyIsArray, clone,
  100. target = arguments[0] || {},
  101. i = 1,
  102. length = arguments.length,
  103. deep = false;
  104. // Handle a deep copy situation
  105. if (typeof target === "boolean") {
  106. deep = target;
  107. // Skip the boolean and the target
  108. target = arguments[i] || {};
  109. i++;
  110. }
  111. // Handle case when target is a string or something (possible in deep copy)
  112. if (typeof target !== "object" && !isFunction(target)) {
  113. target = {};
  114. }
  115. // Extend jQuery itself if only one argument is passed
  116. if (i === length) {
  117. target = this;
  118. i--;
  119. }
  120. for (; i < length; i++) {
  121. // Only deal with non-null/undefined values
  122. if ((options = arguments[i]) != null) {
  123. // Extend the base object
  124. for (name in options) {
  125. src = target[name];
  126. copy = options[name];
  127. // Prevent never-ending loop
  128. if (target === copy) {
  129. continue;
  130. }
  131. // Recurse if we're merging plain objects or arrays
  132. if (deep && copy && (jQuery.isPlainObject(copy) ||
  133. (copyIsArray = Array.isArray(copy)))) {
  134. if (copyIsArray) {
  135. copyIsArray = false;
  136. clone = src && Array.isArray(src) ? src : [];
  137. } else {
  138. clone = src && jQuery.isPlainObject(src) ? src : {};
  139. }
  140. // Never move original objects, clone them
  141. target[name] = jQuery.extend(deep, clone, copy);
  142. // Don't bring in undefined values
  143. } else if (copy !== undefined) {
  144. target[name] = copy;
  145. }
  146. }
  147. }
  148. }
  149. // Return the modified object
  150. return target;
  151. };
  152. jQuery.extend({
  153. // Unique for each copy of jQuery on the page
  154. expando: "jQuery" + (version + Math.random()).replace(/\D/g, ""),
  155. // Assume jQuery is ready without the ready module
  156. isReady: true,
  157. error: function(msg) {
  158. throw new Error(msg);
  159. },
  160. noop: function() {},
  161. isPlainObject: function(obj) {
  162. var proto, Ctor;
  163. // Detect obvious negatives
  164. // Use toString instead of jQuery.type to catch host objects
  165. if (!obj || toString.call(obj) !== "[object Object]") {
  166. return false;
  167. }
  168. proto = getProto(obj);
  169. // Objects with no prototype (e.g., `Object.create( null )`) are plain
  170. if (!proto) {
  171. return true;
  172. }
  173. // Objects with prototype are plain iff they were constructed by a global Object function
  174. Ctor = hasOwn.call(proto, "constructor") && proto.constructor;
  175. return typeof Ctor === "function" && fnToString.call(Ctor) === ObjectFunctionString;
  176. },
  177. isEmptyObject: function(obj) {
  178. /* eslint-disable no-unused-vars */
  179. // See https://github.com/eslint/eslint/issues/6125
  180. var name;
  181. for (name in obj) {
  182. return false;
  183. }
  184. return true;
  185. },
  186. // Evaluates a script in a global context
  187. globalEval: function(code) {
  188. DOMEval(code);
  189. },
  190. each: function(obj, callback) {
  191. var length, i = 0;
  192. if (isArrayLike(obj)) {
  193. length = obj.length;
  194. for (; i < length; i++) {
  195. if (callback.call(obj[i], i, obj[i]) === false) {
  196. break;
  197. }
  198. }
  199. } else {
  200. for (i in obj) {
  201. if (callback.call(obj[i], i, obj[i]) === false) {
  202. break;
  203. }
  204. }
  205. }
  206. return obj;
  207. },
  208. // Support: Android <=4.0 only
  209. trim: function(text) {
  210. return text == null ?
  211. "" :
  212. (text + "").replace(rtrim, "");
  213. },
  214. // results is for internal usage only
  215. makeArray: function(arr, results) {
  216. var ret = results || [];
  217. if (arr != null) {
  218. if (isArrayLike(Object(arr))) {
  219. jQuery.merge(ret,
  220. typeof arr === "string" ? [arr] : arr
  221. );
  222. } else {
  223. push.call(ret, arr);
  224. }
  225. }
  226. return ret;
  227. },
  228. inArray: function(elem, arr, i) {
  229. return arr == null ? -1 : indexOf.call(arr, elem, i);
  230. },
  231. // Support: Android <=4.0 only, PhantomJS 1 only
  232. // push.apply(_, arraylike) throws on ancient WebKit
  233. merge: function(first, second) {
  234. var len = +second.length,
  235. j = 0,
  236. i = first.length;
  237. for (; j < len; j++) {
  238. first[i++] = second[j];
  239. }
  240. first.length = i;
  241. return first;
  242. },
  243. grep: function(elems, callback, invert) {
  244. var callbackInverse,
  245. matches = [],
  246. i = 0,
  247. length = elems.length,
  248. callbackExpect = !invert;
  249. // Go through the array, only saving the items
  250. // that pass the validator function
  251. for (; i < length; i++) {
  252. callbackInverse = !callback(elems[i], i);
  253. if (callbackInverse !== callbackExpect) {
  254. matches.push(elems[i]);
  255. }
  256. }
  257. return matches;
  258. },
  259. // arg is for internal usage only
  260. map: function(elems, callback, arg) {
  261. var length, value,
  262. i = 0,
  263. ret = [];
  264. // Go through the array, translating each of the items to their new values
  265. if (isArrayLike(elems)) {
  266. length = elems.length;
  267. for (; i < length; i++) {
  268. value = callback(elems[i], i, arg);
  269. if (value != null) {
  270. ret.push(value);
  271. }
  272. }
  273. // Go through every key on the object,
  274. } else {
  275. for (i in elems) {
  276. value = callback(elems[i], i, arg);
  277. if (value != null) {
  278. ret.push(value);
  279. }
  280. }
  281. }
  282. // Flatten any nested arrays
  283. return concat.apply([], ret);
  284. },
  285. // A global GUID counter for objects
  286. guid: 1,
  287. // jQuery.support is not used in Core but other projects attach their
  288. // properties to it so it needs to exist.
  289. support: support
  290. });
  291. if (typeof Symbol === "function") {
  292. jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];
  293. }
  294. // Populate the class2type map
  295. jQuery.each("Boolean Number String Function Array Date RegExp Object Error Symbol".split(" "),
  296. function(i, name) {
  297. class2type["[object " + name + "]"] = name.toLowerCase();
  298. });
  299. function isArrayLike(obj) {
  300. // Support: real iOS 8.2 only (not reproducible in simulator)
  301. // `in` check used to prevent JIT error (gh-2145)
  302. // hasOwn isn't used here due to false negatives
  303. // regarding Nodelist length in IE
  304. var length = !!obj && "length" in obj && obj.length,
  305. type = toType(obj);
  306. if (isFunction(obj) || isWindow(obj)) {
  307. return false;
  308. }
  309. return type === "array" || length === 0 ||
  310. typeof length === "number" && length > 0 && (length - 1) in obj;
  311. }
  312. return jQuery;
  313. });