tryjs_output_objects 在线代码实例

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<!DOCTYE html>
<html>  
    <head>      
        <script>        
            function dictionary(){      
                //Define an object for a dictionary type        
                var _obj = new Object();        
                //Check whether a certain key contained or not      
                this.containsKey = function(k){         
                    var isContained = false;        
                    for(var attr in _obj){      
                        if(attr == k){      
                            isContained = true;         
                            break;      
                        }       
                    }       
                    return isContained;         
                }       
                //Add a new element         
                this.addElement = function(k,v){        
                    if(!this.containsKey(k)){       
                        _obj[k] = v;        
                    }       
                }       
                //Remove an existing element        
                this.removeElement = function(k){       
                    if(this.containsKey(k)){        
                        delete _obj[k];         
                    }       
                }       
                //Print the result      
                this.printAll = function(){         
                    var result = JSON.stringify(_obj);      
                    return result;      
                }       
            }       
            var newD = new dictionary();        
 
 
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运行结果
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