core.1.0.1.js

/* * XExtends Core v1.0.1 * * Free open source * Author: xu_liangzhan@163.com */ (function(){ 'use strict'; var str_num = 'number', str_undefined = 'undefined', symbol_iterator = 'iterator', global = typeof window === str_undefined ? this : window, __xe = global.XExtends = {version : "1.0.0"}, __symbolMap = {}, __symbolForList = [], __incrementId = Math.round(Math.random()*100), __decrementId = Math.round(Math.random()*10000); function getSymbolIndex(key, type){ for(var index = 0, len = __symbolForList.length; index < len; index++){ if(key === __symbolForList[index][type]){ return index; } } } /* * ES6 不可变的数据类型，用来产生唯一的标识，但是却无法直接访问这个标识 */ function XESymbol(key){ var value; if(this && this.constructor === XESymbol){ throw new TypeError('Symbol is not a constructor'); } if(__symbolMap.hasOwnProperty(key)){ throw new TypeError('Cannot convert a Symbol value to a string'); } return __symbolMap[value = 'XESymbol(' + key + ') ^' + (__decrementId--) + Date.now() + '' + (__incrementId++) + '' + Math.random()] = key, value; } XESymbol.iterator = XESymbol(symbol_iterator); XESymbol['for'] = function(key){ var value, index = getSymbolIndex(key, 0); if(index === undefined){ __symbolForList.push([key, value = XESymbol(key)]); }else{ value = __symbolForList[index][1]; } return value; } XESymbol.keyFor = function(key){ var index = getSymbolIndex(key, 1); if(typeof index === str_num){ return __symbolForList[index][0]; } if(!__symbolMap.hasOwnProperty(key)){ throw new TypeError(key + ' is not a symbol'); } } XESymbol.isSymbol = function(value){ return typeof getSymbolIndex(value, 1) === str_num || __symbolMap.hasOwnProperty(value); } if(!global.Symbol){ global.Symbol = XESymbol; } __xe.Symbol = XESymbol; if(!global.Symbol.isSymbol){ global.Symbol.isSymbol = function(value){ return typeof value === "symbol"; } } })(); (function(){ 'use strict'; var str_obj = 'object', str_fn = 'function', str_str = 'string', str_arr = 'array', str_num = 'number', str_bool = 'boolean', str_undefined = 'undefined', str_error_nullobject = 'Cannot convert undefined or null to object', proto_string = String.prototype, proto_array = Array.prototype, iterator_index = Symbol('Iterator Index'), iterator_list = Symbol('Iterator Value'), global = typeof window === str_undefined ? this : window, __xe = global.XExtends; function findItem(list, callback, context, has){ for(var index = 0, len = list.length; index < len; index++){ if(callback.call(context || global, list[index], index, list)){ return {index : index, value : has ? true : list[index]}; }; } return {index : -1, value : has ? false : has}; } function getArrayIteratorResult(iterator, value, done){ return done = iterator[iterator_index]++ >= iterator[iterator_list].length, {done : done, value : done ? undefined : value}; } function ArrayEntriesIterator(list){ this[iterator_index] = 0; this[iterator_list] = list; this.next = function(){ return getArrayIteratorResult(this, [this[iterator_index], this[iterator_list][this[iterator_index]]]); } } function ArrayIndexIterator(list){ this[iterator_index] = 0; this[iterator_list] = list; this.next = function(){ return getArrayIteratorResult(this, this[iterator_index]); } } function ArrayValueIterator(list){ this[iterator_index] = 0; this[iterator_list] = list; this.next = function(){ return getArrayIteratorResult(this, this[iterator_list][this[iterator_index]]); } } function each(obj, callback, context){ for(var key in obj){ if(obj.hasOwnProperty(key)){ callback.call(context, obj[key], key, obj) } } } function getObjectIterators(obj, getIndex){ if(__xe.isObject(obj)){ var result = []; for(var key in obj){ if(obj.hasOwnProperty(key)){ result.push([key, obj[key], [key, obj[key]]][getIndex]); } } return result; } throw new TypeError(str_error_nullobject); } function toAssignValue(obj){ return __xe.isObject(obj) || __xe.isFunction(obj) ? obj : Array.from(obj); } each({Object : str_obj, Undefined : str_undefined, Boolean : str_bool, String : str_str, Number : str_num, Function : str_fn}, function(type, method){ __xe['is' + method] = function(obj){ return typeof obj === type; }; }); each({isRegExp : RegExp, isPlainObject : Object, isArray : Array, isDate : Date, isError : Error, isTypeError : TypeError}, function(object, method){ __xe[method] = function(obj){ return obj && obj.constructor === object || false; } }); /* * Object method */ each({ /* * ES5 浅拷贝一个或者多个对象到目标对象中 * * @param Object target 对象 * @param Object ... * @return Object */ assign : function(target){ if(target === null || target === undefined){ throw new TypeError(str_error_nullobject); } target = toAssignValue(target); for(var source, index = 1, len = arguments.length; index < len; index++){ source = toAssignValue(arguments[index]); for(var key in source){ if(source.hasOwnProperty(key)){ target[key] = source[key]; } } } return target; }, /* * ES6判断两个值是否是相同的值 * * @param Object v1 值 * @param Object v2 值 * @return Boolean */ is : function(v1, v2){ if(v1 === v2){ return v1 !== 0 || 1/v1 === 1/v2; } return v1 !== v1 && v2 !== v2; }, /* * ES5 遍历对象的属性 * * @param Object obj 对象 * @return Array */ keys : function(obj){ return getObjectIterators(obj, 0); }, /* * ES8遍历对象的属性值 * * @param Object obj 对象 * @return Array */ values : function(obj){ return getObjectIterators(obj, 1); }, /* * ES8 遍历对象的属性名和属性值 * * @param Object obj 对象 * @return Array */ entries : function(obj){ return getObjectIterators(obj, 2); }, /* * ES5 在一个对象上定义新的属性或修改现有属性 * * @param Object obj 对象 * @param Object props 属性 * @return Object */ defineProperties : function(obj, props){ if(obj && (__xe.isObject(obj) || __xe.isFunction(obj))){ if(props === null || props === undefined){ throw new TypeError(str_error_nullobject); } for(var key in props){ if(props.hasOwnProperty(key)){ Object.defineProperty(obj, key, props[key]); } } return obj; } throw new TypeError('Object.defineProperties called on non-object'); } }, function(fn, name){ if(!Object[name]){ Object[name] = fn; } }); /* * Function method */ each({ /* * ES5 创建一个新的函数, 当被调用时，将其this关键字设置为提供的值 * * @param Object context 上下文 * @return Function */ bind : function(context){ var fn = this; return function(){ return fn.apply(context, arguments); } } }, function(fn, name){ if(!Function.prototype[name]){ Function.prototype[name] = fn; } }); /* * Date method */ each({ /* * ES5 返回至今毫秒数 * * @return Number */ now : function(){ return new Date().getTime(); } }, function(fn, name){ if(!Date[name]){ Date[name] = fn; } }); /* * Number method */ each({ /* * ES6 检查一个数值是否非无穷 * * @param Number val 数值 * @return Boolean */ isFinite : function(val){ r