JS案例:parseFloat()和parseInt()函数应用

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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>内置函数测试示例</title>
</head>
<body>
<pre>
<script type="text/javascript">
		var num="123.5";
		var num_float=parseFloat(num);
		var num_int=parseInt(num);
		document.writeln(num_float);
		document.writeln(num_int);
</script>
</pre></body></html>