JS Mapping

来源：互联网发布：检测移动硬盘的软件编辑：程序博客网时间：2024/05/01 03:38
//ltt add mapping 20081220 design by lttfunction Mapping(){     this.key = new Array();     this.value = new Array();     this.type  =  'LTTMapping';     /*    this.keys  =   function ()  {        return  key;    } ;      this.values  =   function ()  {        return value;    } ;     */} Mapping.prototype.push = function(key,value) {     if (key  !=   null &&  key  !=  'undefined' &&  value  !=   null  &&  value  !=  'undefined')     {      var i=this.findIndexByKey(key);     if(i!=-1)     {      this.value[i]=value;     }     else     {      this.key.push(key);      this.value.push(value);     } }} Mapping.prototype.findIndexByKey = function(key) {      if (key  !=   null   &&  key  !=  'undefined')       {      for(var i=0;i<this.key.length;i++)     {      if(this.key[i]==key)return i;     }     } return -1;} Mapping.prototype.getValue = function(key) {   for(var i=0;i<this.key.length;i++)  {   if(this.key[i]==key)return this.value[i];  }  return null;} Mapping.prototype.exist = function(key){     if (key  !=   null   &&  key  !=  'undefined')     {   for(var i=0;i<this.key.length;i++)  {   if(this.key[i]==key)return true;  } } return false;} Mapping.prototype.size  =   function ()  {        return this.key.length;}   Mapping.prototype.reset = function(key) {   this.key=[];  this.value=[];}//ltt add 可能会出问题Mapping.prototype.remove = function (key)  {var  index  =   this.findIndexByKey(key);    if (index  !=   - 1 )      {         var  tempKey  =   new  Array();         var  tempEntry  =   new  Array();         for ( var  i = this.key.length;i > 0 ;i -- )          {                            if (i  !=  (index + 1 ))              {                     tempKey.push( this.key.pop());                tempEntry.push( this.value.pop());            }             else              {                    this.key.pop();                this.value.pop();            }         }                    for ( var  i = tempKey.length;i > 0 ;i -- )          {                this.key.push(tempKey.pop());            this.value.push(tempEntry.pop());         }               }  }