Object.assign不兼容IE问题解决

Object.assign在IE下运行报错，添加如下代码兼容IE

JavaScript

if (typeof Object.assign != 'function') { Object.assign = function(target) { 'use strict'; if (target == null) { throw new TypeError('Cannot convert undefined or null to object'); } target = Object(target); for (var index = 1; index < arguments.length; index++) { var source = arguments[index]; if (source != null) { for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } } return target; }; }

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if (typeof Object.assign != 'function') {   Object.assign = function(target) {     'use strict';     if (target == null) {       throw new TypeError('Cannot convert undefined or null to object');     }     target = Object(target);     for (var index = 1; index < arguments.length; index++) {       var source = arguments[index];       if (source != null) {         for (var key in source) {           if (Object.prototype.hasOwnProperty.call(source, key)) {             target[key] = source[key];           }         }       }     }     return target;   }; }