                        课程
                    
                        /前端开发
                        
                            /JavaScript
                        
                        /JavaScript进阶篇

再加一个按钮star，点击按钮计时器继续运行怎么实现呢

<!DOCTYPE HTML>

<html>

<head>

function clock(){

var time=new Date();

document.getElementById("clock").value = time;

}

var i = setInterval(clock,1000);

</script>

</head>

<body>

<form>

</form>

</body>

</html>

慕哥2132778

2019-07-15

源自：JavaScript进阶篇 8-4

关注问题我要回答

949

操作

收起

4 回答

qq_慕九州8416717
2020-01-15

没用的重新开始根本触发不了有没有大神

0 回复有任何疑惑可以回复我~

收起回答

慕运维6548256
2019-09-02

<!DOCTYPE HTML>

<html>

<head>

function clock(){

var time=new Date();

document.getElementById("clock").value = time;

}

var i=setInterval("clock()",1000);

function begin(){

i=setInterval("clock()",1000);

}

</script>

</head>

<body>

<form>

</form>

</body>

</html>

0 回复有任何疑惑可以回复我~

收起回答

linatz
2019-07-20

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>计时器</title>
<script type="text/javascript">
   function clock(){
      var time=new Date();
      document.getElementById("clock").value = time;
   }
    var i=setInterval("clock()",100);
    function setTime(){
        var er=setInterval("clock()",100);
    }
</script>
</head>
<body>
<form>
    <input type="text" id="clock" size="50" />
    <input type="button" value="Stop" onClick="clearInterval(i)" />
    <input type="button" value="Begin" onclick="setTime()" />
</form>
</body>
</html>