html运行实例（eg_js_boolean）-搜寻教程库

代码示例：（标识：eg_js_boolean）

<!DOCTYPE html>
<html>
<body>

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

<script>
var b1 = Boolean(100);
var b2 = Boolean(3.14);
var b3 = Boolean(-15);
var b4 = Boolean("Hello");
var b5 = Boolean('false');
var b6 = Boolean(1 + 7 + 3.14);

document.getElementById("demo").innerHTML =
"100 是 " + b1 + "<br>" +
"3.14 是 " + b2 + "<br>" +
"-15 是 " + b3 + "<br>" +
"任何（非空）字符串是 " + b4 + "<br>" +
"即使字符串 'false' 也是 " + b5 + "<br>" +
"任何表达式（除了零）是 " + b6;
</script>

</body>
</html>