Using jquery with OO Javascript

本文关键字：Javascript OO with jquery Using 更新时间：2023-09-26

我正在尝试创建一个jquery弹出脚本OO样式。我这样做是因为我想用更多的jquery/javascript扩展这段代码，而不会失去监督。我收到的错误是Object #<HTMLDivElement> has no method 'centerPopup'和Resource interpreted as Script but transferred with MIME type text/x-c:我是OO javascript的新手，但在OO PHP有相当的经验

function popup(){
    var popupStatus = 0;
    $(document).ready(function () {
        $("#button").click(function()
        {
            this.centerPopup();
            this.loadPopup();
        });
        $("#backgroundPopup").click(function()
        {
            this.disablePopup();
        });
        $(document).keypress(function(e)
        {
            if(e.keyCode==27 && popupStatus==1)
            {
                this.disablePopup();
            }
        });
    });
      this.loadPopup = function (){
        if(this.popupStatus==0)
        {
            $("#backgroundPopup").css(
            {
                "opacity": "0.7"
            });
            $("#backgroundPopup").fadeIn("slow");
            $("#popupContact").fadeIn("slow");
        this.popupStatus = 1;
        }
    }
    this.disablePopup = function (){
        if(this.popupStatus==1)
        {
            $("#backgroundPopup").fadeOut("slow");
            $("#popupContact").fadeOut("slow");
            this.popupStatus = 0;
        }
    }
    this.centerPopup = function (){
        var windowWidth = document.documentElement.clientWidth;
        var windowHeight = document.documentElement.clientHeight;
        var popupHeight = $("#popupContact").height();
        var popupWidth = $("#popupContact").width();
        $("#popupContact").css(
        {
            "position": "absolute",
            "top": windowHeight/2-popupHeight/2,
            "left": windowWidth/2-popupWidth/2
        });
        $("#backgroundPopup").css(
        {
            "height": windowHeight
        });
    }
}
var popup = new popup()

<!DOCTYPE HTML>
<html>
<head>
<link rel="stylesheet" href="css/popup.css" type="text/css" media="screen" />
<script src="http://jqueryjs.googlecode.com/files/jquery-1.2.6.min.js" type="text/javascript"></script>
<script src="js/popup2.js" type="text/javascript"></script>
</head>
<body>
    <center>
        <div id="button"><input type="submit" value="Popup!" /></div>
    </center>
    <div id="popupContact">
        <a id="popupContactClose">x</a>
    </div>
    <div id="backgroundPopup"></div>
</body>
</html>

 $("#button").click(function()
        {
            this.centerPopup();
            this.loadPopup();
        });

this不是你真正想的那样。它不是popup的实例，而是DOM元素(#button)。您可以通过在类的开头保存实例上的引用来修复此问题:

function popup(){
    var self = this;
    this.popupStatus = 0; // you should use `this` here
    $(document).ready(function () {
        $("#button").click(function()
        {
            self.centerPopup();
            self.loadPopup();
        });
/* ... snip ... */