Nodejs String Starts With startsWith(s)

Method Source Code

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

var defaultTrimChars=' \t\r\n';

String.prototype.trimStart=function(chars)
{
   chars=chars ||defaultTrimChars;//from  w w w.j a v  a  2 s .com
   return this.replace(new RegExp('^['+chars+']+'), '');
}
String.prototype.trimEnd=function(chars)
{
   chars=chars ||defaultTrimChars;
   return this.replace(new RegExp('['+chars+']+$'), '');
}
String.prototype.trim=function(chars)
{
   chars=chars ||defaultTrimChars;
   return this.trimStart(chars).trimEnd(chars);
}

Related

1. startsWith(s)

   String.prototype.startsWith = function (s) {
       if (this.substr(0, s.length) === s)
           return true;
       else
           return false;
   

2. startsWith(s)

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

3. startsWith(s)

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

4. startsWith(s)

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

5. startsWith(s)

   function nullOrEmpty(obj) {
       if (obj == null || obj.length == 0 || obj == 'undefined') {
           return true;
       return false;
   String.prototype.startsWith = function (s) {
       return (this.indexOf(s) == 0);
   };
   ...
   

6. startsWith(s)

   String.prototype.startsWith = function(s)
     if(s==null || this.length < s.length) return false;
     return this.substr(0,s.length) == s;
     };
   

7. 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++){
   ...
   

8. startsWith(s)

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

9. 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)
   };