Nodejs String Trim trim()

Method Source Code

Array.isArray = Array.isArray || function (obj) {
   return toString.call(obj) === '[object Array]';
};

String.prototype.trim = String.prototype.trim || function () {
   var str = this.replace(/^\s\s*/, ''),
      i = str.length;/*from w w  w.java  2  s.co m*/

   for (let rgxp = /\s/; rgxp.test(str.charAt(--i));) {}
   return str.substring(0, i + 1);
};

Object.create = Object.create || function (proto) {
   /** @constructor */
   var F = function () {};
   F.prototype = proto;
   return new F();
};

if (!isFunction(Object.getPrototypeOf)) {
   if (typeof 'test'.__proto__ === 'object') {
      Object.getPrototypeOf = (object) => object.__proto__;

   } else {
      Object.getPrototypeOf = (object) => object.constructor.prototype;
   }
}

var spliceTest = {
   0: 1,
   1: 2,
   length: 2
};

splice.call(spliceTest, 1, 1);
if (spliceTest[1] !== undefined || spliceTest.length !== 1) {
   splice = function (from, pos) {
      if (isArray(this)) {
         return this.splice(from, pos);
      }

      var res = [];
      for (; from <= pos; from++) {
         res.push(this[from]);
         delete this[from];
         this.length--;
      }

      return res;
   };
}

Related

1. trim()

   String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); }
   function isProbablyUrl(string) {
     var substr = string.substring(0,4).toLowerCase();
     if (substr == 'ftp:' || substr == 'www.') return true;
     var substr = string.substring(0,5).toLowerCase();
     if (substr == 'http:') return true;
     var substr = string.substring(0,6).toLowerCase();
     if (substr == 'https:') return true;
     var substr = string.substring(0,7).toLowerCase();
   ...
   

2. trim()

   String.prototype.trim = function() {
       return this.replace(/^\s+|\s+$/g, "");
   

3. trim()

   String.prototype.trim=function()
     return this.replace(/^\s+|\s+$/g, '');
   String.prototype.ltrim=function()
     return this.replace(/^\s+/,'');
   String.prototype.rtrim=function()
   ...
   

4. trim()

   String.prototype.trim = function() {
     this.replace(/(^\s*)|(\s*$)/gi,'');
     this.replace(/[ ]{2,}/gi,' ');
     this.replace(/\n /,'\n');
     return this;
   };
   

5. trim()

   String.prototype.trim = function(){
     var start,end;
     start=0;
     end=this.length-1;
     while(start<=end && this.charAt(start)==' '){
       start++;
     while(start<=end && this.charAt(end)==" "){
       end--;
   ...
   

6. trim()

   String.prototype.trim = function() {
     return this.replace(/^\s+|\s+$/g,"");
   

7. trim()

   String.prototype.trim = function() {
     return this.replace(/\s/g, "");
   

8. trim()

   String.prototype.trim= function()
       var str= this.replace(/^\s+/, '');
     for (var i = str.length - 1; i > 0; --i)
       if (/\S/.test(str.charAt(i)))
         str = str.substring(0, i + 1);
         break;
     return str;
   

9. trim()

   String.prototype.trim = function () {
       var start, end;
       start = 0;
       end = this.length - 1;
       while (start <= end && str.charAt(start) == ' ') {
           start++;
       while (start <= end && str.charAt(end) == ' ') {
           end--;
   ...