Nodejs String Starts With startsWith(value)

Method Source Code

/*global QUnit*///from   w  ww .ja  v  a2  s .  com

String.prototype.startsWith = function (value) {
    'use strict';
    return this.lastIndexOf(value, 0) === 0;
};

Related

1. startsWith(text)

   console.log(typeof Array.prototype.sort);          
   console.log(typeof String.prototype.substring);    
   String.prototype.startsWith = function (text) {
     return this.indexOf(text) === 0;
   };
   var msg = 'Hello world!';
   console.log(msg.startsWith('Hello'));  
   

2. startsWith(text)

   String.prototype.startsWith = function (text) {
       return this.indexOf(text) == 0;
   };
   var msg = "Hello world!";
   print(msg.startsWith("Hello"));   
   

3. startsWith(text)

   String.prototype.startsWith = function (text) {
     return this.substring(0, text.length) === text;
   };
   

4. startsWith(text)

   String.prototype.startsWith = function(text) {
       return text != null && this.indexOf(text) == 0;
   };
   

5. startsWith(value)

   String.prototype.startsWith=  function(value)
       if (value.length <= this.length)
           return this.substring(0, value.length) == value;
       return false;
   };
   

6. startsWith(value)

   String.prototype.startsWith = function(value) {
     if (!value)
       return false;
     if (value.length > this.length)
       return false;
     return value === this.substring(0, value.length);
   };
   String.prototype.formatForUrl = function () {
     return this.replace(/[^a-z0-9]/gi, '-').toLowerCase();
   ...
   

7. startsWith(value)

   String.prototype.startsWith = function (value) {
     if (value == undefined || typeof (value) != "string")
       return false;
     if (value.length == 0)
       return true;
     return this.substring(0, value.length) == value;
   };
   

8. startsWith(value)

   String.prototype.startsWith = function (value) {
       "use strict";
       var length = this.substring(0, value.length),
           startsWith = false;
       if (length === value && value !== "" && value !== 'undefined') {
           startsWith = true;
       return startsWith;
   };
   ...
   

9. startsWith(x)

   String.prototype.startsWith = function (x) {
     return this.indexOf(x) === 0;
   };