Nodejs String Empty Check isBlank()

Method Source Code

String.prototype.isBlank = function (){
   var str = $.trim(this);
   if(str == "") {
      return true;
   } else {/*from   w w  w .  j  a v  a 2 s.c  o  m*/
      return false;
   }
}

Related

1. isEmpty(pattern)

   String.prototype.isEmpty = function(pattern) {
     return this == '';
   };
   

2. isEmpty(str)

   String.isEmpty = function(str){
       if(typeof str === 'string'){
           str = str.trim();
       switch(str){
           case "":
           case 0:
           case null:
           case false:
   ...
   

3. isBlank()

   String.prototype.isBlank = function() { 
     return !this.match(/\S/) 
   

4. isBlank()

   String.prototype.isBlank = function() {
     return (!this || /^\s*$/.test(this));
   };
   

5. isBlank()

   String.prototype.isBlank = function() {
       return (this==null || this=="");
   

6. isBlank()

   String.prototype.isBlank = function() {
       if (this.trim().length == 0)
           return true;
       else
           return false;
   };
   Date.prototype.toLocalDate = function() {
       var localTime = this.getTime();
       var localOffset = this.getTimezoneOffset() * 60000;
   ...
   

7. isBlank()

   String.prototype.isBlank = function() {
       if (this == undefined || this == "" || this == null || /^\s*$/.test(this)) {
           return true;
       return false;
   };
   

8. isBlank()

   String.prototype.isBlank = function()
     try
       var value = this.toString().trim();
       if (value == null) return true;
         if (value.length == 0)
           return true;
         else
   ...
   

9. isBlank(pattern)

   String.prototype.isBlank = function(pattern) {
     return /^\s*$/.test(this);
   };