### Object.assign ``` <script> //Object.assign 就是进行对象的浅拷贝 var source={ name: "test", age: 11 } //克隆一个新对象出来 // 方式1 var newObj=Object.assign({},source); console.log(newObj); //方式2 var newObj2={}; Object.assign(newObj2,source); console.log(newObj2); </script> ``` ### 辅助函数 ``` //对象 var source={ name: "test", age: 11 } var newObj = { ...source, age:12 } //数组 var arr = [1, 2, 3] var arr1 = [ ...arr ] ```