在Asp.net中使用JQuery插件之jTip代碼

更新時(shí)間：2010年03月03日 14:03:37 作者：

jTip 是個(gè)輕量級(jí)的提示插件。

默認(rèn)支持兩個(gè)參數(shù)：
width寬度，default value :250px
link 要link的URL
對(duì)應(yīng)的Source code是:

 
var params = parseQuery( queryString ); 
if(params['width'] === undefined){params['width'] = 250}; 
if(params['link'] !== undefined){ 
$('#' + linkId).bind('click',function(){window.location = params['link']}); 
$('#' + linkId).css('cursor','pointer'); 
} 

然后我們看到初始化時(shí)，是選擇所有class=jTip的<a>標(biāo)簽，然后給它們加上hover方法，讓click方法失效

復(fù)制代碼代碼如下:

 
//on page load (as soon as its ready) call JT_init 
$(document).ready(JT_init); 
function JT_init(){ 
$("a.jTip") 
.hover(function(){JT_show(this.href,this.id,this.name)},function(){$('#JT').remove()}) 
.click(function(){return false}); 
} 

接著取得當(dāng)前id的位置計(jì)算將要顯示DIV的位置，code也不復(fù)雜：

復(fù)制代碼代碼如下:

 
if(hasArea>((params['width']*1)+75)){ 
$("body").append("<div id='JT' style='width:"+params['width']*1+"px'><div id='JT_arrow_left'></div><div id='JT_close_left'>"+title+"</div><div id='JT_copy'><div class='JT_loader'><div></div></div>");//right side 
var arrowOffset = getElementWidth(linkId) + 11; 
var clickElementx = getAbsoluteLeft(linkId) + arrowOffset; //set x position 
}else{ 
$("body").append("<div id='JT' style='width:"+params['width']*1+"px'><div id='JT_arrow_right' style='left:"+((params['width']*1)+1)+"px'></div><div id='JT_close_right'>"+title+"</div><div id='JT_copy'><div class='JT_loader'><div></div></div>");//left side 
var clickElementx = getAbsoluteLeft(linkId) - ((params['width']*1) + 15); //set x position 
} 
$('#JT').css({left: clickElementx+"px", top: clickElementy+"px"}); 
$('#JT').show(); 
$('#JT_copy').load(url); 

其它的一些help function可以參看source code，你可以從這里下載它.
如何使用呢？我們引入它與相應(yīng)的CSS：

復(fù)制代碼代碼如下:

 
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jQuery/jquery-1.3.2.min.js"></script> 
<script src="js/jtip.js" type="text/javascript"></script> 

在asp.net webform中使用Handler,asp.net mvc 可以用action.這個(gè)用Handler演示：

復(fù)制代碼代碼如下:

 
[WebService(Namespace = "http://tempuri.org/")] 
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] 
public class DataHandler : IHttpHandler 
{ 
#region Properties (1) 
public bool IsReusable 
{ 
get 
{ 
return false; 
} 
} 
#endregion Properties 
#region Methods (2) 
// Public Methods (1) 
public void ProcessRequest(HttpContext context) 
{ 
context.Response.ContentType = "text/plain"; 
context.Response.Write(GetData(Convert.ToInt32(context.Request.QueryString["id"]))); 
} 
// Private Methods (1) 
private string GetData(int key) 
{ 
Dictionary<int, string> mydatadic = new Dictionary<int, string>(); 
mydatadic.Add(0, "Nothing in life is to be feared. It is only to be understood,this is id equal 0"); 
mydatadic.Add(1, "<strong>A man</strong> is not old as long as he is seeking something. A man is not old until regrets take the place of dreams. ,this is id equal 1"); 
mydatadic.Add(2, "A man can succeed at almost anything for which he has unlimited enthusiasm.,this is id equal 2"); 
mydatadic.Add(3, "To live is to function. That is all there is in living. ,this is id equal 3"); 
return mydatadic[key]; 
} 
#endregion Methods 
} 

好的，在最終的HTML中這么寫：

復(fù)制代碼代碼如下:

 
<span class="formInfo"><a href="DataHandler.ashx?id=0&width=375" class="jTip" id="one" name="Password must follow these rules:">?</a></span> 
<br> 
<p><a href="DataHandler.ashx?id=3&width=175&amp;link=http://www.google.com" name="Before You Click..." id="googleCopy" class="jTip">Go To Google</a></p> 
<a href="DataHandler.ashx?id=3" class="jTip" id="three">Tip No Caption</a> 

默認(rèn)是取name attribute value為Caption，上面是三種典型的link。id是我們自己傳給Handler的QueryString,最終效果如下圖所示：