Nodejs String Starts With startsWith(searchString, position)

Method Source Code

if (!String.prototype.startsWith) {
  String.prototype.startsWith = function(searchString, position) {
    position = position || 0;//w w w  .j  av a2 s .c  om
    return this.indexOf(searchString, position) === position;
  };
}

Related

1. startsWith(s)

   String.prototype.startsWith = function(s){
       return /^s/i.test(this);
   };
   String.prototype.endsWith = function(s){
       return /s$/i.test(this);
   };
   Array.prototype.contains = function(a){
       var l = this.length;
       for(var i=0;i<l;i++){
   ...
   

2. startsWith(s)

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

3. startsWith(s, i)

   String.prototype.startsWith = function(s, i) {
     if(i) { return s.toLowerCase() == this.substring(0, s.length).toLowerCase() }
     return s == this.substring(0, s.length)
   };
   

4. startsWith(search, pos)

   String.prototype.startsWith = String.prototype.startsWith || function(search, pos) {
       'use strict';
       return this.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
   };
   

5. startsWith(searchString, position)

   String.prototype.startsWith = function(searchString, position) {
     position = position || 0;
     return this.indexOf(searchString, position) === position;
   

6. startsWith(searchString, position)

   String.prototype.startsWith = function(searchString, position){
         position = position || 0;
         return this.substr(position, searchString.length) === searchString;
   };
   

7. startsWith(searchString, position)

   String.prototype.startsWith = function(searchString, position) {
     position = position || 0
     return this.substr(position, searchString.length) === searchString
   

8. startsWith(start)

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

9. startsWith(start)

   String.prototype.startsWith = function(start) {
       if(start == '') return true;
       else if(start == null || start.length > this.length) return false;
       else return this.substring(0,start.length) == start;