Nodejs String Starts With startsWith(start)

Method Source Code

// ( 8 ) String.startsWith()
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;
}

Related

1. startsWith(searchString, position)

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

2. startsWith(searchString, position)

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

3. startsWith(searchString, position)

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

4. startsWith(searchString, position)

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

5. startsWith(start)

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

6. startsWith(str)

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

7. startsWith(str)

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

8. startsWith(str)

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

9. startsWith(str)

   String.prototype.startsWith = function(str) {
       return ( str === this.substr( 0, str.length ) );