我创建了一个显示Metro MessageBar的插件，效果很好。我被要求支持callbacks并为此目的在fadeIn功能中添加了一些代码。
出于某种原因，callback显示为有效function，但未调用？
以下是我收到的消息：
this.trigger is not a function
...感谢任何帮助。
这是如何使用插件：
this.showSubmitMessage = function () {
var options = {
message: "This is a test.",
messageType: "information"
};
// self.btnSubmit.click IS a valid function!!! Use your own if you want.
nalco.es.rk.globals.messageBarManager.display(options, self.btnSubmit.click);
};
这是插件中的违规区域代码：
this.fadeIn = function (element, callback) {
element.prependTo(self.container).centerToScrollTop().fadeIn(self.globals.fadeDuration, function() {
if (callback != null)
if ($.isFunction(callback))
setTimeout(function () {
callback();
}, self.globals.callbackDuration);
});
};
这是整个用户控制插件：
请注意文件依赖性“jquery.Extensions.js”的代码位于此帖子的底部。
<script src="Scripts/jQuery/Core/jquery-1.6.2.min.js" type="text/javascript"></script>
<script src="Scripts/jQuery/Core/jquery.tmpl.js" type="text/javascript"></script>
<script src="Scripts/jQuery/jquery.Extensions.js" type="text/javascript"></script>
<style type="text/css">
.messageBar { background-color: #DDDDDD; color: #666666; display: none; left: 0; padding: 15px; position: absolute; top: 0; width: 932px; z-index: 1000; }
.messageBar .content { width: 100%; }
.messageBar .content td.image { width: 70px; }
.messageBar .content td.button { width: 60px; }
.messageBar .button { margin-top: 0px; }
.messageBar .content .icon { background-repeat: no-repeat; height: 31px; overflow: hidden; width: 31px; }
.messageBar .content .message { }
.messageBar .content .image { background-repeat: no-repeat; height: 10px; overflow: hidden; width: 70px; }
.messageBar.error { background-color: #FFBABA; color: #D8000C; }
.messageBar.information { background-color: #99CCFF; color: #00529B; }
.messageBar.success { background-color: #DFF2BF; color: #4F8A10; }
.messageBar.warning { background-color: #FEEFB3; color: #9F6000; }
.messageBar.error .content .icon { background-image: url('/_layouts/images/error.png'); }
.messageBar.information .content .icon { background-image: url('/_layouts/images/info.png'); }
.messageBar.success .content .icon { background-image: url('/_layouts/images/success.png'); }
.messageBar.warning .content .icon { background-image: url('/_layouts/images/warning.png'); }
</style>
<script id="template-messageBar" type="text/html">
<div class="messageBar">
<table class="content">
<tbody>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td class="button">
<input type="button" value="Close" class="button metroButton" />
</td>
</tr>
</tbody>
</table>
</div>
</script>
<script id="template-messageBar-icon" type="text/html">
<div class="icon">
</div>
</script>
<script id="template-messageBar-message" type="text/html">
<div class="message">
${Message}
</div>
</script>
<script id="template-messageBar-image" type="text/html">
<div class="image">
</div>
</script>
<script type="text/javascript">
;nalco.es.rk.source.MessageBarManager = (function ($) {
var publicInstances = {};
publicInstances.Controller = Controller;
function Controller(options) {
var self = this;
this.messageTypes = { error: "error", information: "information", normal: null, success: "success", warning: "warning" };
this.globals = {
callbackDuration: 2000,
fadeDuration: 700,
workingImageUrl: "url('/_layouts/images/Nalco.ES.SharePoint.UI/metro-ajax-loader-blue.gif')"
};
this.defaults = {
message: "",
messageType: self.messageTypes.normal,
showIcon: false,
showWorkingImage: false
};
this.container = $('body');
this.templateMessageBarId = '#template-messageBar';
this.templateMessageBarIconId = '#template-messageBar-icon';
this.templateMessageBarMessageId = '#template-messageBar-message';
this.templateMessageBarImageId = '#template-messageBar-image';
this.selectors = { content: '.content', closeButton: '.button', root: '.messageBar' };
this.initialize = function () {
self.display(options);
};
this.display = function (options, callback) {
var empty = {};
var settings = $.extend(empty, self.defaults, $.isPlainObject(options) ? options : empty);
if (settings.messageType != null)
if (settings.messageType.length == 0)
settings.messageType = self.messageTypes.normal;
if (settings.message.length == 0)
return;
var eleMessageBar = $(self.templateMessageBarId).tmpl(empty);
var eleContent = $(self.selectors.content, eleMessageBar);
var eleCellOne = $('td:eq(0)', eleContent);
var eleCellTwo = $('td:eq(1)', eleContent);
var eleCellThree = $('td:eq(2)', eleContent);
var eleMessage = $(self.templateMessageBarMessageId).tmpl({ Message: settings.message });
var btnClose = $(self.selectors.closeButton, eleMessageBar);
if (settings.messageType != self.messageTypes.normal) {
eleMessageBar.addClass(settings.messageType);
if (settings.showIcon) {
var eleIcon = $(self.templateMessageBarIconId).tmpl(empty);
eleCellOne.css('width', '31px');
eleIcon.appendTo(eleCellOne);
}
}
eleMessage.appendTo(eleCellTwo);
btnClose.click(function () {
eleMessageBar.fadeOut(self.globals.fadeDuration, function () {
eleMessageBar.remove();
});
});
if (settings.showWorkingImage) {
var eleImage = $(self.templateMessageBarImageId).tmpl(empty);
eleCellThree.addClass('image');
eleImage.css('background-image', self.globals.workingImageUrl);
eleImage.appendTo(eleCellThree);
}
var elePreviousMessage = $(self.selectors.root, self.container);
if (elePreviousMessage.length > 0) {
btnClose = $(self.selectors.closeButton, elePreviousMessage);
btnClose.click();
setTimeout(function () { self.fadeIn(eleMessageBar, callback); }, self.globals.fadeDuration);
}
else
self.fadeIn(eleMessageBar, callback);
};
this.fadeIn = function (element, callback) {
element.prependTo(self.container).centerToScrollTop().fadeIn(self.globals.fadeDuration, function() {
if (callback != null)
if ($.isFunction(callback))
setTimeout(function () {
callback();
}, self.globals.callbackDuration);
});
};
self.initialize();
};
return publicInstances;
})(jQuery);
function initializeMessageBarManager() {
nalco.es.rk.globals.messageBarManager = new nalco.es.rk.source.MessageBarManager.Controller();
}
$(document).ready(function () {
initializeMessageBarManager();
if (typeof (Sys) != "undefined")
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(initializeMessageBarManager);
});
</script>
这是以上文件中列出的扩展依赖性：
// **********************
// .centerToScrollTop
// Use -
// Centers an ELEMENT to the window's scrollTop.
//
// Example -
// $('.myElement').centerToScrollTop();
// **********************
(function ($) {
$.fn.extend({
centerToScrollTop: function (options) {
return this.each(function () {
var element = $(this);
var container = $(window);
var scrollTop = container.scrollTop();
var buffer = 30;
var top = scrollTop + buffer;
var left = (container.width() - element.outerWidth()) / 2 + container.scrollLeft();
element.css({ 'position': 'absolute', 'top': top, 'left': left });
return element;
});
}
});
})(jQuery);
答案 0 :(得分：0)
如果您忘记包含jquery-ui.min.js等文件，通常会发生此类错误。请仔细检查是否添加了所有必要的引用。