怎么才能打印出來啊
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>計(jì)時(shí)器</title>
<script type="text/javascript">
? var num=0;
? function startCount() {
??? document.getElementById('count').value=num;
??? num=num+1;
??? setTumeout("startCount()",1000);
? }
startCount();
</script>
</head>
<body>
<form>
<input type="text" id="count" />
</form>
</body>
</html>
2018-11-13
var num = 0;? ?
? ? ?startCount();
? ? ?function startCount() {
? ? ? ? ?document.getElementById("count").value = num;
? ? ? ? ?var s = setTimeout(function(){
? ? ? ? ? ? ?num++;
? ? ? ? ? ? ?startCount();
? ? ? ? ? ? ?clearTimeout(s);
? ? ? ? ? ? ?},1000);
? ? ?}
2018-11-13
在<input>后面加上<button onClick="startCount()?">click me</button>就可以了
2018-11-13
錯(cuò)誤有點(diǎn)多哦
setTumeout了你
函數(shù)外的不是調(diào)用函數(shù)是調(diào)setTimeout('startCount()',1000);