JavaScript While 循环

2022-04-21
javascript

基本格式（while……）

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while (条件) {
    // 代码块
}

例子:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<button onclick="myFunction()">开始</button>
<p id="data"></p>
<script>
function myFunction(){
	var a = "", i = 0;
	while (i<10){
		a = a + "输出数据 " + i + "<br>";
		i++;
	}
	document.getElementById("data").innerHTML = a;
}
</script>
</body>
</html>

while 遍历数组 (while)

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<script>
        data = ["ONES",
                "TWR",
                "THREE"];
    var i=0;
    while (data[i]){
        document.write(data[i] + "<br>");
        i++;
    }
    </script>
</body>
</html>

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