Nodejs Utililty Methods String Starts With

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

String.prototype.startsWith = function (str){
    return this.indexOf(str) == 0;
};
function getHashParams() {
    var hashParams = {};
    var e,
        a = /\+/g,  
        r = /([^&;=]+)=?([^&;]*)/g,
        d = function (s) { return decodeURIComponent(s.replace(a, " ")); },
...

String.prototype.startsWith = function(str) {
    if (str == this.substring(0, str.length)) return true;
    return false;

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

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

String.prototype.startsWith = function(str, ignoreCase) {
  return (ignoreCase ? this.toUpperCase() : this)
    .indexOf(ignoreCase ? str.toUpperCase() : str) == 0;
};

String.prototype.startsWith = function (string) {
  var index = arguments.length < 2 ? 0 : arguments[1];
  return this.slice(index).indexOf(string) === 0;
};

String.prototype.startsWith = function (string) {
  var index = arguments.length < 2 ? 0 : arguments[1];
  return this.slice(index).indexOf(string) === 0;
};

String.prototype.startsWith = function(string){
  if (typeof(string) !== "string") {
    throw new Error("Input argument was not a string");
  } else if (this.substring(0, string.length) === string) {
    return true;
  } else {
    return false;
};
...

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