javascript中各种正则表达式验证
/*验证email*/
var str = email;
var expression = /\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
var objExp = new RegExp(expression);
(objExp.test(str) == true){
return true;
}else
return false;
/* 验证电话号码 */
var str = tel ;
var expression = /(\d{3}-?\d{8}|(\d{4}-)(\d{7})/;
var objExp = new RegExp(expression);
if(objExp.test(str) == true){
return true ;
}else
return false;
/* 验证是否为汉字 */
var str = name ;
var expression = /[\u4E00-\u9FA5/;
var objExp = new RegExp(expression);
if(objExp.test(str) == true){
return true ;
}else
return false;
/* 验证身份证号码 */
var str = NO;
var expression = /\d{17}[\d|X]|\d{15}/;
var objExp = new RegExp(expression);
if(objExp.test(str) == true){
return true ;
}else
return false;
/* 验证网址是否合法 */
var str = url;
var expression = /http(s)?:\/\/([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?/;
var objExp = new RegExp(expression);
if(objExp.test(str) == true){
return true ;
}else
return false;
/* 限制字符串长度str为指定字符串，digit为指定最大长度 */
function checkstr(str,digit)
{ var n = 0 ;
for(int i = 0;i<str.length;i++)
{
var leg = str.charCodeAt(i);
if(leg>255){
n+=2;
}else
n+=1;
}
if(n>digit)
return true ;
else
return false;
}