代码1var arr1 = [‘a‘, ‘b‘]; var arr2 = [‘a‘, ‘c‘]; var arr3 = arr1.concat(arr2); // arr3: [‘a‘, ‘b‘, ‘a‘, ‘c‘]concat:1，合并数组2，返回一个新数组3，按顺序组合用法：newArr=arr1.concat(arr2); 代码2 var obj1 = {name: ‘张三‘, age: 22}; var obj2 = {name: ‘李四‘, sex: ‘boy‘}; var obj3 = Object.assgin(obj1, obj2); // obj3: {name: ‘李四‘, age: 22, sex: ‘boy‘} Object.assgin:1，合并...