Javascript基本函数文件（去空格、Email格式判断）_邮箱格式可以空格吗-优快云博客

本文链接：https://blog.youkuaiyun.com/dengxingbo/article/details/3668491

本文提供了一组JavaScript函数，用于实现字符串的基本验证操作，包括去除空白字符、检查字符串组成、验证电子邮件格式、判断字符串是否为空及长度限制等。

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一般我在写Javascript文件时把一些最基本的函数写在一个文件里，供其它js文件调用，并命名为base.js

//Wipe off the blank
function trim(str){
return str.replace(/(^/s*)|(/s*$)/g, "");
}
//Check the string ,it should compose with the english , number, "_" or "-"
function isCharacter(str) {
   var strRequest = /^([a-zA-Z0-9._-])+/;
   if(strRequest.test(str)) {
       return true;
   }
   return false;
}

//Check the email format, it should give the value just like abc_efg@163.com ,the symbol "@" and "." must be contained.
function isEmail(email) {
   var emailRequest = /^([a-zA-Z0-9._-])+@([a-zA-Z0-9_-])+(/.[a-zA-Z0-9_-])+/;
   if(emailRequest.test(email)) {
       return true;
   }
   return false;
}

//Check the value ,if it empty ,return false
function isEmpty(str) {
   str = trim(str);
   if(str === null || str === "") {
       return true;
   }
   return false;
}

//The string's length can't larger than the maxLength
function overMaxLeng(str, maxLength) {
   var strLeng = str.leng;
   if(strLeng > maxLength) {
       return true;
   }
   return false;
}

//The string's length can't less than the minLength
function lessMinLeng(str, minLength) {
   var strLeng = str.leng;
   if(strLeng < minLength) {
       return true;
   }
   return false;
}