Nodejs String Starts With startsWith(s)

Here you can find the source of startsWith(s)

Method Source Code

//#region General Utils
function nullOrEmpty(obj) {
    if (obj == null || obj.length == 0 || obj == 'undefined') {
        return true;
    }/*from ww  w .  j a  va2s . com*/
    return false;
}
//#endregion

//#region String Utils
//#region String Extensions
// ------------------------------------------------------------------
// String Extensions
// ------------------------------------------------------------------
String.prototype.startsWith = function (s) {
    return (this.indexOf(s) == 0);
};

Related

  1. startsWith(prefix, ignoreCase)
    String.prototype.startsWith = function (prefix, ignoreCase) {
        var _prefix = prefix.source ? prefix.source : prefix.escapeRegExp();
        return this.match(new RegExp("^" + _prefix, ignoreCase ? 'i' : ''));
    };
    String.prototype.endsWith = function (suffix, ignoreCase) {
        var _suffix = suffix.source ? suffix.source : suffix.escapeRegExp();
        return this.match(new RegExp(_suffix + "$", ignoreCase ? 'i' : ''));
    };
    String.prototype.escapeRegExp = function() {
    ...
    
  2. startsWith(s)
    String.prototype.startsWith = function (s) {
        if (this.substr(0, s.length) === s)
            return true;
        else
            return false;
    
  3. startsWith(s)
    String.prototype.startsWith = function (s) {
      return (this.indexOf(s) === 0);
    
  4. startsWith(s)
    String.prototype.startsWith = function(s) {
        return (s === this.substr(0, s.length));
    
  5. startsWith(s)
    String.prototype.startsWith = function(s){
       return (this.indexOf(s)===0);
    
  6. startsWith(s)
    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;
      return this.replace(new RegExp('^['+chars+']+'), '');
    ...
    
  7. startsWith(s)
    String.prototype.startsWith = function(s)
      if(s==null || this.length < s.length) return false;
      return this.substr(0,s.length) == s;
      };
    
  8. 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++){
    ...
    
  9. startsWith(s)
    String.prototype.startsWith = function (s) {
        return this.indexOf(s) == 0;