Nodejs String Starts With startsWith(str)

Method Source Code

String.prototype.startsWith = function(str){
  return this.slice(0, str.length) == str
}

Related

1. startsWith(str)

   String.prototype.startsWith = function(str) {
     return (this.match("^"+str)==str);
   String.prototype.endsWith = function(str)  {
     return (this.match(str+"$")==str);
   

2. startsWith(str)

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

3. startsWith(str)

   String.prototype.startsWith = String.prototype.startsWith || function(str){
      return this.substr(0,str.length) === str
   };
   String.prototype.contains   = String.prototype.contains   || function(str){
     return this.indexOf(str) >= 0
   };
   

4. startsWith(str)

   String.prototype.startsWith = function(str) {
     return (this.match("^"+str)==str);
   };
   

5. startsWith(str)

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

6. startsWith(str)

   String.prototype.startsWith = function(str) {
       if (typeof str !== 'string') return false;
       return this.indexOf(str) === 0;
   };
   

7. startsWith(str)

   String.prototype.startsWith = function (str) {
       "use strict";
       return (this.match("^" + str) == str);
   };
   

8. startsWith(str)

   String.prototype.startsWith = function(str)
   {return (this.match("^"+str)==str)}
   String.prototype.endsWith = function(str)
   {return (this.match(str+"$")==str)}
   var myStr = "Earth is a beautiful planet";
   if (myStr.startsWith("Earth")) { 
     console.log("TRUE");
   else {
   ...
   

9. startsWith(str)

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