js split 的用法和定义 js split分割字符串成数组的实例代码
<script language="javascript">
str="2,2,3,5,6,6"; //这是一字符串
var strs= new Array(); //定义一数组
strs=str.split(","); //字符分割
for (i=0;i<strs.length ;i++ )
{
document.write(strs[i]+"<br/>"); //分割后的字符输出
}
</script>
从字符串中提取数字
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>js实现在字符串中提取数字</title>
<script language="javascript" type="text/javascript">
function getNum(text){
var value = text.replace(/[^0-9]/ig,"");
alert(value);
}
</script>
</head> <body>
<input type="text" id="btn_getNum"/>
<input type="button" value="得到数字" onclick="getNum(btn_getNum.value);"/>
</body>
</html>