一個(gè)AJAX類代碼

2024-09-01 08:29:20

字體：大中小

供稿：網(wǎng)友

基本用法：
代碼如下:
var ajax = new AjaxObj(url);
ajax.addListener(200, function(r){
alert(r);
});
ajax.send();

也可以連續(xù)調(diào)用：
代碼如下:
var ajax = new AjaxObj(url).addListener(200, function(r){
alert(r);
}).send();

另外還支持自定義的POST或GET方式請(qǐng)求，以及監(jiān)視不同的HTTP狀態(tài)碼，自己看代碼琢磨吧 :)
完整代碼：
代碼如下:
AjaxObj = function(url, method, content){
    this.r = null;
    this.url = url;
    this.method = method;
    this.content = content;
    this.header = {};
    this.header["Connection"] = "close";
    this.header["Content-type"] = "application/x-www-form-urlencoded";
    var self = this;
    if(window.XMLHttpRequest){
        this.r = new XMLHttpRequest();
    }else if(window.ActiveXObject){
        try {
            this.r = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
            try{
                this.r = new ActiveXObject("Microsoft.XMLHTTP");
            } catch(e) {
            }
        }
    }
    this.addListener = function(http_status, func){
        if(!this.L)
            this.L=[];
        this.L[http_status] = func;
        return this;
    };
    this.setHeader = function(name, value){
        this.header[name] = value;
        this.r.setRequestHeader(name, value);
        return this;
    };
    this.send = function(){
        if(this.method != "post" && this.method != "get")
            this.method = "get";
        this.r.open(this.method, this.url, true);
        for(var h in this.header) {
            this.r.setRequestHeader(h, this.header[h]);

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