Nodejs String Empty Check isBlank()

Method Source Code

/**//  ww w. j  a  v a  2  s  .co m
 * Created by IntelliJ IDEA.
 * User: deepthi.kulkarni
 * Date: 26/07/13
 * Time: 5:09 PM
 * To change this template use File | Settings | File Templates.
 */

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

Related

1. isEmpty()

   String.prototype.isEmpty = function() {
     var rtn = (this == null || this == undefined || this.trim() == '');
     return rtn;
   };
   

2. isEmpty(pattern)

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

3. isEmpty(str)

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

4. isBlank()

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

5. isBlank()

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

6. isBlank()

   String.prototype.isBlank = function (){
     var str = $.trim(this);
     if(str == "") {
       return true;
     } else {
       return false;
   

7. 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;
   ...
   

8. isBlank()

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

9. isBlank()

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