javascript hashtable 修正版 下载_javascript技巧

修正hashtableobj.set("length","0") bug
可以设置key忽略大小写
可以clone hashtable对象
可以 使用obj.valueOf("key","defalutvalue") 设置默认值等等
欢迎修正bug

复制代码 代码如下:

// 作者 Birdshome、麻袋@博客园 改版 phito、彭海涛
Object.prototype.Clone = function()
{
var objClone;
if ( this.constructor == Object ) objClone = new this.constructor();
else objClone = new this.constructor(this.valueOf());
for ( var key in this )
{
if ( objClone[key] != this[key] )
{
if ( typeof(this[key]) == 'object ' )
{
objClone[key] = this[key].Clone();
}
else
{
objClone[key] = this[key];
}
}
}
objClone.toString = this.toString;
objClone.valueOf = this.valueOf;
返回objClone；
}
function Hashtable() {
this.clear = hashtable_clear;
this.containsKey = hashtable_containsKey;
this.containsValue = hashtable_containsValue;
this.get = hashtable_get;
this.isEmpty = hashtable_isEmpty;
this.keys = hashtable_keys;
this.put = hashtable_put;
this.remove = hashtable_remove;
this.size = hashtable_size;
this.toString = hashtable_toString;
this.values = hashtable_values;
this.hashtable = new Object();
this.set = hashtable_set;
this.valueOf = hashtable_valueOf;
this.clone = hashtable_clone;
this.ignoreupperlower = true;
//是否忽略大小写
}
/*=======仅供内部使用的私有方法========*/
function hashtable_clone(){
返回this.Clone();
}
function hashtable_put(key, value) {
if (this.ignoreupperlower && typeof(key) == "string") {
key = key.toUpperCase();
}
if (key == null || value == null) {
抛出 "NullPointerException {" key "},{" value "}";
} else {
this.hashtable[key] = value;
}
}
function hashtable_set(key, value) {
if (this.ignoreupperlower && typeof(key) == "string") {
key = key.toUpperCase();
}
if (this.containsKey(key)) {
this.remove(key);
}
this.put(key, value);
}
function hashtable_get(key) {
if (this.ignoreupperlower && typeof(key) == "string") {
key = key.toUpperCase();
}
返回 this.hashtable[key];
}
function hashtable_valueOf(key, defvalue) {
var ret = this.get(key);
if (typeof(ret) == "undefined") {
return defvalue;
}
返回 ret;
}
function hashtable_remove(key) {
if (this.containsKey(key)) {
删除 this.hashtable[key] ;
}
}
函数 hashtable_isEmpty() {
return (parseInt(this.size()) == 0) ?真：假；
}
函数 hashtable_size() {
var size = 0;
for (var i in this.hashtable) {
if(typeof(this.hashtable[i])=="function"){
继续;
}
if (this.hashtable[i] != null) {
大小 ;
}
}
返回尺寸；
}
function hashtable_toString() {
var result = "";
for (var i in this.hashtable) {
if(typeof(this.hashtable[i])=="function"){
继续;
}
if (this.hashtable[i] != null) {
result = "{" i ":" this.hashtable[i] "}n";
}
}
返回结果；
}
function hashtable_clear() {
this.hashtable = new Object();
}
function hashtable_containsKey(key) {
if (this.ignoreupperlower && typeof(key) == "string") {
key = key.toUpperCase();
}
var 存在 = false;
for (var i in this.hashtable) {
if(typeof(this.hashtable[i])=="function"){
继续;
}
if (i == key && this.hashtable[i] != null) {
exists = true;
休息；
}
}
返回存在；
}
function hashtable_containsValue(value) {
var contains = false;
if (value != null) {
for (var i in this.hashtable) {
if(typeof(this.hashtable[i])=="function"){
继续;
}
if (this.hashtable[i] == value) {
contains = true;
休息；
}
}
}
返回包含；
}
函数 hashtable_values() {
var value = new Object();
for (var i in this.hashtable) {
if(typeof(this.hashtable[i])=="function"){
继续;
}
if (this.hashtable[i] != null) value.push(this.hashtable[i]);
}
返回值；
}
function hashtable_keys() {
var keys = new Object();
for (var i in this.hashtable) {
if(typeof(this.hashtable[i])=="function"){
继续;
}
keys.push(i);
}
返回键；
}
函数测试() {
var ht = new Hashtable();
ht.put("3", "杰克逊");
ht.put("2", "汤姆");
ht.put("4", 3);
ht.set("长度", 445555);
ht.set("ddd", "ddd");
ht.set("index", "ddd");
var et = ht.toString();
ht.ignoreupperlower = false;
//忽略大小写
ht.clear();
ht.put("3", "杰克逊");
ht.put("2", "汤姆");
ht.remove("2");
ht.put("4", 3);
ht.set("长度", 5);
//如果用new Array的话就会设置Array的长度
ht.set("index", "ddd");
ht.set("ddd", "ddd");
alert(et "" ht.toString() "" ht.size());
var cloneobj=ht.clone();
alert(cloneobj.toString());
}