下面实例来自W3CSchool 学习网站。
<!DOCTYPE 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();
function AddAndPrint(){
newD.addElement("0000","张三");
newD.addElement("0001","李四");
document.getElementById("divContent").innerHTML = newD.printAll();
}
function RemoveAndPrint(k){
newD.removeElement("0000");
document.getElementById("divContent").innerHTML = newD.printAll();
}
</script>
</head>
<body>
<div id="divContent"></div>
<input type="button" value="Click Me To Add" onclick="AddAndPrint();"/>
<input type="button" value="Click Me To Remove" onclick="RemoveAndPrint('0000');"/>
</body>
</html>
