如下所示，为什么点击Reset按钮Interval并没有被重置呢？<!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()",1000); </script></head><body> <form> <input type="text" id="clock" size="50" /> <input type="button" value="Stop" onclick="clearInterval(i)"/> <input type="button" value="Reset" onclick="setInterval("clock()",1000)"/> </form></body></html>
1 回答
qq_陈大郎_03780931
TA贡献1条经验 获得超0个赞
原来是双引号嵌套的问题，改成这样就好了：
<!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()",1000);
</script>
</head>
<body>
<form>
<input type="text" id="clock" size="50" />
<input type="button" value="Stop" onclick="clearInterval(i)"/>
<input type="button" value="Reset" onclick="setInterval('clock()',1000)"/>
</form>
<body>
</html>
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