Nodejs Array Value superJoin(value)

Method Source Code

/**//from w w  w . j  a va2s.  c  o  m
 * Created by Moment on 2015/8/24.
 */

isNullOrEmpty=function(obj) {
    if (obj == undefined || obj == null || obj == "") {
        return true;
    }
    else {
        return false;
    }
}

Array.prototype.superJoin=function(value){
    var ids="";
    for (var i=0,n=this.length; i<n; i++){
        ids=ids+this[i].id+value;
    }
    ids=ids.substr(0,ids.length-1);
    return ids;
};
====
Array.prototype.indexOf = function(value){
    for (var i=0,n=this.length; i<n; i++){
        if (this[i] === value){
            return i;
        }
    }
    return -1;
};

Related

1. pad(minSize, val)

   Array.prototype.pad = function(minSize, val) {
       var padded = new Array();
       for (var i = 0; i < this.length; i++) {
           padded.push(this[i]);
       while (padded.length < minSize) {
           padded.push(val || null);
       return padded;
   ...
   

2. plumRemove(elemVal)

   Array.prototype.plumRemove = function(elemVal){
     var i = this.indexOf(elemVal);
     if(i>-1){
       this.splice(i, 1);
   };
   

3. query(field, operator, value)

   Array.prototype.query = function (field, operator, value) { 
       if (operator=="contains"){
           value = value.toLowerCase();
         return this.filter(function (item){
          return item[field].toLowerCase().indexOf(value) !== -1;   
       });
     else if(operator == "==") {
       return this.filter(function (item){
   ...
   

4. resize(newSize, defaultValue = 0)

   Array.prototype.resize = Array.prototype.resize || function(newSize, defaultValue = 0) {
       while (newSize > this.length) {
           this.push(defaultValue);
       this.length = newSize;
   };
   

5. resizeMatrix(rowsSize, columnsSize, defaultValue = 0)

   Array.prototype.resizeMatrix = Array.prototype.resizeMatrix || function(rowsSize, columnsSize, defaultValue = 0) {
       while (rowsSize > this.length) {
           var row = [];
           row.resize(columnsSize, defaultValue);
           this.push(row);
       this.length = rowsSize;
   };
   

6. toggleValue(value)

   Array.prototype.toggleValue = function (value) {
       var index = this.indexOf(value);
       if (index === -1) {
           this.push(value);
       else {
           this.splice(index, 1);
   };
   ...
   

7. trim(value)

   Array.prototype.trim = function (value) {
     var array = this.slice(0); 
     while (array.length > 0 && array[0] === value) {
       array.shift();
     while (array.length > 0 && array[array.length - 1] === value) {
       array.pop();
     return array;
   ...
   

8. tw_indexOf(val)

   Array.prototype.tw_indexOf = function(val) {
       for (var i = 0; i < this.length; i++) {
           if (this[i] == val) return i;
       return -1;
   };
   Array.prototype.tw_remove = function(val) {
       var index = this.indexOf(val);
       if (index > -1) {
   ...
   

9. unset(value)

   Array.prototype.unset = function (value) {
       if (this.indexOf(value) !== -1) { 
           this.splice(this.indexOf(value), 1);
   };