![js中有["1","2","3","4"]这样一个string，怎么把它变成array](/aiimages/js%E4%B8%AD%E6%9C%89%5B%26quot%3B1%26quot%3B%2C%26quot%3B2%26quot%3B%2C%26quot%3B3%26quot%3B%2C%26quot%3B4%26quot%3B%5D%E8%BF%99%E6%A0%B7%E4%B8%80%E4%B8%AAstring%EF%BC%8C%E6%80%8E%E4%B9%88%E6%8A%8A%E5%AE%83%E5%8F%98%E6%88%90array.png)
<html>
<head>
<style type="text/css">
#main{
text-align:center
margin-left:25%
width:50%
border:1px solid black
}
#player,#result,#cpu{
height:100%
float:left
}
#player{
background:#dde
}
#cpu{
background:#ecc
}
#player,#cpu{
width:25%
}
#result{
width:50%
}
#viewBox{
width:80%
height:45%
}
#choiceBox .item{
float:left
width:33.33%
height:100%
line-height:100%
background:#bbe
cursor:pointer
}
#choiceBox{
height:25%
width:60%
margin-left:20%
}
</style>
</head>
<body>
<div id="main">
<div id="viewBox">
<div id="player">玩家</div>
<div id="result"></div>
<div id="cpu">电脑</div>
</div>
<div id="choiceBox">
<span class="item">剪刀</span>
<span class="item">石头</span>
<span class="item">布</span>
</div>
</div>
<script type="text/javascript">
var _main = document.getElementById("main")
var _viewBox = document.getElementById("viewBox")
var _choiceBox = document.getElementById("choiceBox")
var _player = document.getElementById("player")
var _result = document.getElementById("result")
var _cpu = document.getElementById("cpu")
_choiceBox.childNodes[1].onmouseover =
_choiceBox.childNodes[3].onmouseover =
_choiceBox.childNodes[5].onmouseover = function(){this.style["background"] = "#aae"}
_choiceBox.childNodes[1].onmouseout =
_choiceBox.childNodes[3].onmouseout =
_choiceBox.childNodes[5].onmouseout = function(){this.style["background"] = "#bbe"}
function resize(){
var width = window.innerWidth
var height = window.innerHeight
var smaller = width > height ? height : width
_main.style["height"] = height * 0.5 + "px"
_main.style["margin-top"] = height * 0.2 + "px"
_main.style["font-size"] = smaller * 0.08 + "px"
_player.style["line-height"] = height * 0.225 + "px"
_result.style["line-height"] = height * 0.225 + "px"
_cpu.style["line-height"] = height * 0.225 + "px"
_viewBox.style["padding"] = height * 0.05 + "px " + width * 0.05 + "px"
_choiceBox.childNodes[1].style["line-height"] = height * 0.125 + "px"
_choiceBox.childNodes[3].style["line-height"] = height * 0.125 + "px"
_choiceBox.childNodes[5].style["line-height"] = height * 0.125 + "px"
_choiceBox.style["font-size"] = smaller * 0.04 + "px"
}
resize()
window.onresize = resize
//以下是猜拳逻辑部分
var choiceItems = [{name:"剪刀"},{name:"石头"},{name:"布"}]
choiceItems[0]["next"] = choiceItems[1]
choiceItems[0]["pre"] = choiceItems[2]
choiceItems[1]["next"] = choiceItems[2]
choiceItems[1]["pre"] = choiceItems[0]
choiceItems[2]["next"] = choiceItems[0]
choiceItems[2]["pre"] = choiceItems[1]
_choiceBox.childNodes[1].onclick = function(){cal(choiceItems[0])}
_choiceBox.childNodes[3].onclick = function(){cal(choiceItems[1])}
_choiceBox.childNodes[5].onclick = function(){cal(choiceItems[2])}
function cal(player_choice){
var cpu_choice = choiceItems[parseInt(Math.random() * 3)]
_player.innerHTML = player_choice["name"]
_cpu.innerHTML = cpu_choice["name"]
if(cpu_choice == player_choice){
_result.innerHTML = "-"
}else if(cpu_choice == player_choice["pre"]){
_result.innerHTML = "win"
}else if(cpu_choice == player_choice["next"]){
_result.innerHTML = "loss"
}
}
</script>
</body>
</html>
大哥，刚刚看到你的就开始写了。各种功能都有，包括判断你输入的字符是否正确，假如不符合的字符就提示。不玩了就可以直接按0退出。
然后，只要是赢三次，输三次都自动退出，并输出你输赢，还可以自动共玩多少局，输赢局数统计！希望能帮到您。
/*
猜拳游戏思路
1、定义输入函数
2、提示用户输入猜拳数值
3、定义随机一个数作为电脑数值
4、判断[用户输入数值]与 [电脑随机数值]
5、能够相等就是打平，不能相等就利用&&、||逻辑符判断输赢
6、设定数值1-石头 2-剪刀 3-布
*/
import java.util.*//嵌入Java.util包所有
public class Cq{
public static void main(String[] args){
int win=0//赢的记录
int lose=0//输的记录
int all=1//计数总的局数
int a=1//控制循环条件使用
System.out.println("--------------猜拳游戏---------------")
System.out.println("游戏规则：赢三次便赢，输三次便输。")
while(a>0){//假如a=0的话就不用继续玩
Scanner in=new Scanner(System.in)//定义输入函数in，Scanner包功能，输入数值用的
System.out.println("请输入一个数值：1、石头 2、剪刀 3、布 0、退出游戏")//提示输入数值
System.out.println(" ")//空行
int x=in.nextInt()//让用户输入X的数值
Random on=new Random()//定义电脑的随机数值的函数on
int y=on.nextInt(3)+1//定义y随机函数数值范围（1--3）
if(x>=4){ //判断用户是否输入非1--3范围
System.out.println("亲，请正确输入：1、石头 2、剪刀 3、布。你输入了："+x)
}else if(x==0){
a=0
System.out.println("欢迎再次玩“猜拳游戏”！")
return
}
else{
/*下面是判断用户输入x的数值 嵌套if*/
if(x==y){
if(x==1){ //判断打平的情况
System.out.println("你：石头------电脑：石头 PK：平手"+" 共玩"+all+"局,"+"赢："+win+",输："+lose)
all++
}
else if(x==2){
System.out.println("你：剪刀------电脑：剪刀 PK：平手"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}else {
System.out.println("你：布------电脑：布 PK：平手"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}
/* 打平手的判断END*/
}else if(x==1&&y==2||x==2&&y==3||x==3&&y==1){ //开始判断赢的情况
if(x==1&&y==2){
win++//win1
System.out.println("[你]：石头---VS---[电脑]:剪刀 PK：赢了！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}else if(x==2&&y==3){
win++//win2
System.out.println("[你]：剪刀---VS---[电脑]：布 PK：赢了！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}else {
win++//win3
System.out.println("[你]：布---VS---[电脑]：石头 PK：赢了！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}
//判断赢的情况END
}else {//开始判断输的情况
if(x==1&&y==3){
lose++
System.out.println("[你]：石头---VS---[电脑]：布 PK：输了！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}else if(x==2&&y==1){
lose++
System.out.println("[你]：剪刀---VS---[电脑]：石头 PK：输了！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}else {
lose++
System.out.println("[你]：布---VS---[电脑]：剪刀 PK：输了！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
all++
}
}//判断输的情况END
if(win==3){
System.out.println("")
System.out.println("")
System.out.println("游戏结束：恭喜您！你已经赢了[电脑]三局！！！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
a=1
return
}else if (lose==3) {
a=1
System.out.println("")
System.out.println("")
System.out.println("游戏结束：很遗憾，电脑赢了你三盘！继续加油！"+" 共玩"+all+"局，"+"赢："+win+",输："+lose)
return
}
else{continue}
}//判断是否输入数值1-3范围，如果不是1-3会提醒重新输入 END
}//while
}
}
