正确的使用JQuery的方式

2018-06-22 01:33:18

到目前为止，使用JQuery Mobile和Phonegap的正确方法是什么？

这两个框架在使用之前都需要加载。我怎么能确定在使用它们之前都装载了它们？

您可以使用JQuery的延期功能。

var deviceReadyDeferred = $.Deferred();
var jqmReadyDeferred = $.Deferred();

document.addEventListener("deviceReady", deviceReady, false);

function deviceReady() {
  deviceReadyDeferred.resolve();
}

$(document).one("mobileinit", function () {
  jqmReadyDeferred.resolve();
});

$.when(deviceReadyDeferred, jqmReadyDeferred).then(doWhenBothFrameworksLoaded);

function doWhenBothFrameworksLoaded() {
  // TBD
}

基于上面的例子，以下是它的工作原理

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <meta name="format-detection" content="telephone=no" />
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />
        <link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
        <title>InforMEA</title>
    </head>
    <body>
        <script type="text/javascript" src="js/jquery-1.8.3.js"></script>
        <script type="text/javascript">
            var dd = $.Deferred();
            var jqd = $.Deferred();
            $.when(dd, jqd).done(doInit);

            $(document).bind('mobileinit', function () {
                jqd.resolve();
            });
        </script>
        <script type="text/javascript" src="js/jquery.mobile-1.2.0.js"></script>
        <script type="text/javascript" src="cordova-2.2.0.js"></script>
        <script type="text/javascript">
            document.addEventListener('deviceready', deviceReady, false);
            function deviceReady() {
                dd.resolve();
            }

            function doInit() {
                alert('Ready');
            }
        </script>
    </body>
</html>

为了使用jquery mobile的phonegap，你需要像这样使用它

<head>
<title>Index Page</title>

<!-- Adding viewport -->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, user-scalable=no">

<!-- Adding jQuery scripts -->
<script type="text/javascript" src="jquery/jquery-1.7.1.min.js"></script>

<!-- Since jQuery Mobile relies on jQuery core's $.ajax() functionality,
 $.support.cors & $.mobile.allowCrossDomainPages must be set to true to tell
 $.ajax to load cross-domain pages. -->
<script type="text/javascript">
    $(document).bind("mobileinit", function() {
        $.support.cors = true;
        $.mobile.allowCrossDomainPages = true;
    });
</script>

<!-- Adding Phonegap scripts -->
<script type="text/javascript" charset="utf-8"
    src="cordova/cordova-1.8.0.js"></script>

<!-- Adding jQuery mobile scripts & CSS -->
<link rel="stylesheet" href="jquerymobile/jquery.mobile-1.1.0.min.css" />
<script type="text/javascript"
    src="jquerymobile/jquery.mobile-1.1.0.min.js"></script>

</head>
<script type="text/javascript">
    // Listener that will invoke the onDeviceReady() function as soon as phonegap has loaded properly
    document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
        navigator.splashscreen.hide();

        document.addEventListener("backbutton", onBackClickEvent, false); // Adding the back button listener    

    }
    </script>
<body>
<div data-role="page" id="something" data-ajax="false">
        <script type="text/javascript">
            $("#something").on("pageinit", function(e) {

            });

            $("#something").on("pageshow", function(e) {

            });

            $("#something").on("pagebeforeshow", function(e) {

            });
        </script>

        <div data-role="header">            
        </div>

        <div data-role="content">           
        </div>      
    </div>
</body>

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