html运行实例（eg_js_string_length）-搜寻教程库

代码示例：（标识：eg_js_string_length）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 字符串属性</h1>

<p>length 属性返回字符串的长度：</p>

<p id="demo"></p>

<script>
var txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
document.getElementById("demo").innerHTML = txt.length;
</script>

</body>
</html>