disabled.html - Android社区 - https://www.androidos.net.cn/

<html>
<body>
<p>Test to ensure the the window.applicationCache attribute is defined but non-functional with the feature disabled.</p>
<div id=result></div>
<script>
    if (window.layoutTestController) {
        layoutTestController.overridePreference("WebKitOfflineWebApplicationCacheEnabled", false);
        layoutTestController.dumpAsText();
    }

    function log(message)
    {
        document.getElementById("result").innerHTML += message + "<br>";
    }

    function isDefined() {
        if (window.applicationCache)
            return true;
        else
            return false;
    }

    function statusIsUncached() {
        return applicationCache.status == 0;
    }

    function swapThrows() {
        try {
            applicationCache.swapCache();
            return false;
        } catch(e) {
            return true;
        }
    }

    function updateThrows() {
        try {
            applicationCache.swapCache();
            return false;
        } catch(e) {
            return true;
        }
    }

    if (isDefined() && statusIsUncached() && swapThrows() && updateThrows())
        log("SUCCESS");
    else
        log("FAILURE");
</script>
</body>
</html>