我有一个最初很长的加载应用程序,所以我尝试制作启动画面。它“几乎”完美地运作。我收到以下错误:Uncaught TypeError: Cannot read property 'style' of undefined
指向app.js中的特定行。但是,我只是看不出它有什么问题。启动画面加载精细并逐渐消失(几乎)。我注意到,看起来我创建的div仍然存在,但你看不到它,但它仍然从输入中掩盖了身体。这是我的app.js:
Ext.Loader.setConfig({
enabled: true
});
var splashscreen;
Ext.onReady(function () {
// Start the mask on the body and get a reference to the mask
splashscreen = Ext.getBody().mask('Dashboard Loading...', 'splashscreen');
// Add a new class to this mask as we want it to look different from the default.
splashscreen.addCls('splashscreen');
// Insert a new div before the loading icon where we can place our logo.
Ext.DomHelper.insertFirst(Ext.query('.x-mask-msg')[0], {
cls: 'x-splash-icon'
});
});
Ext.create('Ext.app.Application', {
controllers: ['Main'],
stores: ['Saless', 'ProdGrid002s', 'ProdGrid008s', 'ProdGrid009s', 'Unitcosts', 'Prepaids',
'Logintakes', 'WasteTickets', 'InventoryFinisheds', 'InventoryRoughs', 'Shipments'],
name: 'Dash1',
appFolder: '/html/cgi-dev/millapps/dashboards/Dash1/app',
launch: function () {
// Setup a task to fadeOut the splashscreen
var apptask = new Ext.util.DelayedTask(function () {
// Fade out the body mask
splashscreen.fadeOut({
duration: 2000,
remove: true
});
// Fade out the icon and message
splashscreen.next().fadeOut({
duration: 2000,
remove: true,
listeners: {
afteranimate: function () {
// Set the body as unmasked after the animation
Ext.getBody().unmask();
}
}
});
});
// Run the fade after launch.
apptask.delay(1000);
},
autoCreateViewport: true
});
我的样式表:
.x-mask.splashscreen {
background-color: white;
opacity: 1;
}
.x-mask-msg.splashscreen,
.x-mask-msg.splashscreen div {
font-size: 18px;
padding: 110px 110px 50px 110px;
border: none;
background-color: transparent;
background-position: top center;
}
.x-message-box .x-window-body .x-box-inner {
min-height: 200px !important;
}
.x-splash-icon {
/* Important required due to the loading symbols CSS selector */
background-image: url('/resources/images/logo.jpg') !important;
margin-top: -30px;
margin-bottom: 20px;
}
错误指向代码行Ext.getBody()。unmask();这是在afteranimate功能。我很难过.....
答案 0 :(得分:0)
不相关,但您在该代码中遇到了一个竞争条件,导致您难以重现错误。我不得不推迟Ext.getBody().unmask()
来触发它。
问题在于,由于remove: true
选项,您的动画正在销毁unmask方法尝试访问的DOM元素。但是,由于Ext在内部跟踪掩码,因此确实需要调用unmask()
以避免以后出现不可预测的行为。
因此,解决方案只是删除anims配置中的两个remove: true
行,而unmask将负责处理DOM元素本身。