Front-desk JS verification

Self summary

1. Set text box to enter only numbers

Onkeyup= "This.value=this.value.replace (/[^\d]/g,") "//Replace onkeypress=" Keypressnumber () "Onafterpaste=" this.value=  This.value.replace (/[^\d]/g, ') "onpaste=" return false; " Prohibit paste

function Keypressnumber () {//can only enter numbers
var keycode = Event.keycode;
if ((keycode >= && keycode <= 57))
{
Event.returnvalue = true;
} else {
Event.returnvalue = false;
}
}

2. Only letters and numbers can be entered

Onkeypress= "Keypresspwd ()" onpaste= "return false;"

function Keypresspwd () {
var keycode = Event.keycode;
if ((keycode >= && keycode <= 57) | | (KeyCode >= && keycode <= 122) | | (KeyCode >= && keycode <= 90))
{
Event.returnvalue = true;
} else {
Event.returnvalue = false;
}
}

3//determines whether the character entered is: a-z,a-z,0-9 maximum 12 bits, allowed to be empty

function Isstringa_z0_9 (str)
{
if (str.length!=0) {
reg=/^[a-za-z0-9]{1,12}$/;
if (!reg.test (str)) {
return false;
}
return true;
}
return true;
}

4//determine No. 400 number
function Is400phone (str) {
   if (str.length==0) {
    return true;
  }  
      reg=/^400\d{7}$/;    
       if (!reg.test (str)) {   
             return false;
     }   
      return true;
 } 

5//determines the landline number
function Istel (obj) {
        var str = obj.value;
        if (str.length = = 0) {
             return true;
       }
        reg =/^ (0[0-9]{2,3}\-)? ([2-9][0-9]{6,7}) + (\-[0-9]{1,4})? $/;
        if (!reg.test (str)) {
             return false;
       }
        return true;
   }

6 //determine the phone number
function Isphone (str) {
   if (str.length==0) {
    return true;
  }  
      reg=/^ (\d{3}-\d{8}$|^\d{4}-\d{7}$) | ( (13[0-9]|14[0-9]|15[0-9]|18[0-9]) \d{8}$)/;    
      if (! Reg.test (str)) {   
            return False
     }   
      return true;
 }   

7//Determines whether the character entered is: Kanji, a-z,a-z, number
function isstring (str)     
 {       
         if (str.length!=0) {      
          Reg=/^[0-9a-za-z\u4e00-\u9fa5]{1,}$/gi;   
          if (!reg.test (str)) {   
              return false;
         }   
           return true;
        }   
          return true;
 }

8//Determines whether the characters entered are compound mailbox format
function isemail (str)     
 {       
         if (str.length!=0) {     
          reg=/^[^\[email protected]][email protected][^ \[email protected]]+\. [a-z]+$/;
          if (!reg.test (str)) {   
               return false;
         }   
           return true;
        }   
          return true;
 }  

9//determine if the phone number includes landline and mobile phone
function Isphoneormobile (str) {
if (str.length==0) {
return true;
}
REG1 =/^ (\d{3}-\d{8}$|^\d{4}-\d{7}$) | ((13[0-9]|14[0-9]|15[0-9]|18[0-9]) \d{8}$)/;
REG2 =/^ (0[0-9]{2,3}\-)? ([2-9][0-9]{6,7}) + (\-[0-9]{1,4})? $/;
if (!reg1.test (str) &&!reg2.test (str)) {
return false;
}
return true;
}

10//Judge QQ

function isqq (str)
{
if (str.length!=0) {
reg=/^[1-9]{1}[0-9]{4,9}$/;
if (!reg.test (str)) {
return false;
}
return true;
}
return true;
}

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Front-desk JS verification