While 循环

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<meta charset="utf-8">
<title>滴答编程(dida100.com)</title>
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<p>点击下面的按钮，只要 i 小于 5 就一直循环代码块。</p>
<button onclick="myFunction()">点击这里</button>
<p id="demo"></p>
<script>
function myFunction(){
	var x="",i=0;
	while (i<5){
		x=x + "该数字为 " + i + "<br>";
		i++;
	}
	document.getElementById("demo").innerHTML=x;
}
</script>

</body>
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