Nodejs Array Delete trim(deleteValue)

Method Source Code

Array.prototype.trim = function(deleteValue) {
   var i;//from ww w.j av a 2 s  .  c  om

   // Remove from start
   for (i = 0; i < this.length && this[i] == deleteValue;) {
      this.splice(i, 1);
   }

   // Remove from end
   for (i = this.length-1; i >= 0 && this[i] == deleteValue; --i) {
      this.splice(i, 1);
   }

   return this;
};

Related

1. del(index)

   Array.prototype.del = function(index){
       if(isNaN(index) || index > this.length || index < 0){
           return false;
       this.splice(index,1);
   

2. del(n)

   Array.prototype.del=function(n) {
     if(n<0){
       return this;
     }else{
       return this.slice(0,n).concat(this.slice(n+1,this.length));
   

3. deleteRepeat()

   Array.prototype.deleteRepeat = function(){
     var arr = this, 
       result=[], 
       flag; 
     for(var i=0;i<arr.length;i++){
       flag=true;
       for(var j=0;j<result.length;j++){
         if(result[j]===arr[i]){
           flag=false;
   ...
   

4. deleteSame()

   function JsonSort(json,key){
       for(j=1;j < json.length;j++){
           var temp = json[j],
               val  = temp[key],
               i    = j-1;
           while(i >=0 && json[i][key]>val){
               json[i+1] = json[i];
               i = i-1;
           json[i+1] = temp;
       return json;
   Array.prototype.deleteSame = function(){
     var res = [this[0]];
     for(var i = 1; i < this.length; i++){
       var repeat = false;
       for(var j = 0; j < res.length; j++){
         if(this[i] == res[j]){
           repeat = true;
           break;
       if(!repeat){
         res.push(this[i]);
     return res;