汪汪一只猫
使用Array.push()将任何东西放入数组。var a=[], b={};a.push(b); // a[0] === b;有关数组的更多信息一次添加多个项目var x = ['a'];x.push('b', 'c');// x = ['a', 'b', 'c']将项目添加到数组的开头var x = ['c', 'd'];x.unshift('a', 'b');// x = ['a', 'b', 'c', 'd']将一个数组的内容添加到另一个数组var x = ['a', 'b', 'c'];var y = ['d', 'e', 'f'];x.push.apply(x, y);// x = ['a', 'b', 'c', 'd', 'e', 'f']// y = ['d', 'e', 'f'] (remains unchanged)从两个数组的内容创建一个新数组var x = ['a', 'b', 'c'];var y = ['d', 'e', 'f'];var z = x.concat(y);// x = ['a', 'b', 'c'] (remains unchanged)// y = ['d', 'e', 'f'] (remains unchanged)// z = ['a', 'b', 'c', 'd', 'e', 'f']