匹配中文字符的正则表达式: [\u4e00-\u9fa5] String.prototype.len=function(){return this.replace([^\x00-\xff]/g,"aa").length;}
String.prototype.trim = function() {
return this.replace(/(^\s*)|(\s*$)/g, ""); }
function IP2V(ip) {
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re=/(\d )\.(\d )\.(\d )\.(\d )/g //匹配IP地址的正则表达式 if(re.test(ip)) { return RegExp.*Math.pow(255,3)) RegExp.*Math.pow(255,2)) RegExp.*255 RegExp.*1 } else { throw new Error("Not a valid IP address!") } }
var ip="10.100.20.168"
ip=ip.split(".") alert("IP值是:" (ip[0]*255*255*255 ip[1]*255*255 ip[2]*255 ip[3]*1))
var s="abacabefgeeii"
var s1=s.replace(/(.).*/g,"") var re=new RegExp("[" s1 "]","g") var s2=s.replace(re,"") alert(s1 s2) //结果为:abcefgi
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