javascript 数组Array 模拟 栈 和 队列 ( push pop shift unshift )

先上图:

代码演示:

var arr=[];
arr.push('tom','james','alen','peter');
console.log(arr.length);

//这里toString()一下,不然用console.log()就看不到效果了

console.log(arr.toString());

console.log('----------------');

//pop
console.log('pop:'+arr.pop());
console.log(arr.length);
console.log(arr.toString());

console.log('----------------');

//shift
console.log('shift:'+arr.shift());
console.log(arr.length);
console.log(arr.toString());

console.log('----------------');

//unshift
console.log('unshift:lily,lucy');
arr.unshift('lily','lucy');
console.log(arr.length);
console.log(arr.toString());

console.log('----------------');

//shift
console.log('shift:'+arr.shift());
console.log(arr.length);
console.log(arr.toString());