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Introduction to the use of parseInt() method of global objects in JavaScript

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2016-05-16 17:08:161505browse

How to use the parseInt() method of the global object. The following is a detailed introduction for you. Friends who are interested should not miss it

<html> 
<head> 
<title>全局对象的parseInt() 方法</title> 
<script> 
/* 
parseInt() 函数可解析一个字符串，并返回一个整数。 
1、解析字符串，直到不能解析为止 
2、进制转化中，解析字符串，直到不能解析为止 
*/ 
document.write(parseInt("123") + "<br/>");//123 
document.write(parseInt("1abc23") + "<br/>");//1 
document.write(parseInt("123abc") + "<br/>");//123 
document.write(parseInt("abc") + "<br/>");//NaN 
document.write(parseInt("100",2) + "<br/>");//4，以二进制形式解析 
document.write(parseInt("123",2));//1，因为2、3不能解析 
</script> 
</head> 
<body> 
<p id="time"></p> 
</body> 
</html>

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