Nodejs Utililty Methods String Empty Check

List of utility methods to do String Empty Check

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Description

The list of methods to do String Empty Check are organized into topic(s).

Method

isEmpty()
String.prototype.isEmpty = function() {
    return this == null || this == '';
};
RegExp.escape = function(val) {
    return val.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
};
isEmpty()
String.prototype.isEmpty = function() { 
  return (!this.length)
isEmpty()
String.prototype.isEmpty = function() {
  return this.toString().trim() == "";
};
isEmpty()
String.prototype.isEmpty = function() {
  return (!this || 0 === this.length);
};
isEmpty()
String.prototype.isEmpty = function() {
  return (this == '');
};
isEmpty()
String.prototype.isEmpty = function () {
  "use strict";
  return (this.length === 0 || !this.trim());
};
isEmpty()
String.prototype.isEmpty=function(){
  return this.trim()=="";
};
isEmpty()
String.prototype.isEmpty = function () {
  return (!this || this == "[object Null]" || this == "" || this == "undefined");
isEmpty()
String.prototype.isEmpty = function() {
  return this.trim() === "";
isEmpty()
String.prototype.isEmpty = function(){
    return (this === null || this === '');
};