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jquery - 对于以下场景,jQuery 代码中的隐藏/显示有什么问题?

转载 作者:行者123 更新时间:2023-12-01 07:58:08 24 4
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我的网站使用 PHP、Smarty、jQuery 等。我正在显示问题列表,其中包含该问题的可用答案选项和正确答案。现在每个问题都有一个超链接。当用户单击特定问题的超链接时,该特定问题的内容(选项标题、实际选项、正确答案)如果正在显示,则应隐藏;如果内容被隐藏,则应显示。

当显示内容时,超链接应包含“隐藏答案”文本,当隐藏内容时,超链接文本应为“显示答案”。另一件事是,当页面最初加载时,每个问题的上述内容(选项标题、实际选项、正确答案)都应该隐藏,每个问题的超链接文本应该是“显示答案”。该问题列表的HTML如下:

<div id="entrancelist">
<h2 class="heading">favourite questions</h2>
<table cellpadding="0" cellspacing="0" border="0" width="98%" style="padding:5px;" align="center">
<tbody>

<tr>
<td>
<div class="sub_name" id="" >
<div style="height:auto; overflow:hidden; width:100%;">
<table cellpadding="5" cellspacing="0" border="0" width="100%" class="manage_box">
<tr class="question_info">
<td valign="top" width="70%">
<b>Question 1.</b></td>
<td valign="top" align="left" width="30%">
<b><a href ="#" style="margin-right:0px;" class="fav_que" id="16164">Remove From Favourite Question</a></b></td></tr>
<tr class="question_info">
<td valign="top" colspan="2">
<br /><b>Direction : </b><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">

</td></tr>
<tr class="question_info">
<td valign="top">
<b>Question : </b>
<br/><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p>A 150 m long train is moving to north at a speed of 10 m/s. A parrot flying towards south with a speed of 5 m/s crosses the train. The time taken by the parrot the cross to train would be :<br></p></body></html>
</td>
<td valign="bottom" align="right"><b>QUE16164</b></td>
</tr>
<tr class="question_info">
<td valign="top" colspan="2">
<a href="#" class="show-ans">Show Answers</a>
</td>
</tr>
</td>
</tr>
<tr>
<td colspan="2">
<b>Options : </b>
</td>
</tr>
<tr>
<td class="options" colspan="2"> 1 .

30 s

</td>
</tr>
<tr>
<td class="options" colspan="2"> 2 .

15 s

</td>
</tr>
<tr>
<td class="options" colspan="2"> 3 .

8 s

</td>
</tr>
<tr>
<td class="options" colspan="2"> 4 .

10 s

</td>
</tr>
<tr>
<td colspan="2">
<b>Correct Answer :</b> 4
</td>
</tr>
</table>
<table cellpadding="5" cellspacing="0" border="0" width="100%" class="manage_box">
<tr class="question_info">
<td valign="top" width="70%">
<b>Question 2.</b></td>
<td valign="top" align="left" width="30%">
<b><a href ="#" style="margin-right:0px;" class="fav_que" id="38552">Remove From Favourite Question</a></b></td></tr>
<tr class="question_info">
<td valign="top" colspan="2">
<br /><b>Direction : </b><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">

</td></tr>
<tr class="question_info">
<td valign="top">
<b>Question : </b>
<br/><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p>For figure 24, the correct relation is -<br><img height="110" src="http://www.entranceprime.com/upload_media/questions/original/1328941281_38.JPG" width="172"></p></body></html>
</td>
<td valign="bottom" align="right"><b>QUE38552</b></td>
</tr>
<tr class="question_info">
<td valign="top" colspan="2">
<a href="#" class="show-ans">Show Answers</a>
</td>
</tr>
</td>
</tr>
<tr>
<td colspan="2">
<b>Options : </b>
</td>
</tr>
<tr>
<td class="options" colspan="2"> 1 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=9329a28849bd94b3bcc49e3a4b69a595.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td class="options" colspan="2"> 2 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=c8c15583e8f5742625e6d80c71f3a691.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td class="options" colspan="2"> 3 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=af6f96bda5c2f575fc42e4751c5772fe.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td class="options" colspan="2"> 4 .

All of the above

</td>
</tr>
<tr>
<td colspan="2">
<b>Correct Answer :</b> 4
</td>
</tr>
</table>
<table cellpadding="5" cellspacing="0" border="0" width="100%" class="manage_box">
<tr class="question_info">
<td valign="top" width="70%">
<b>Question 3.</b></td>
<td valign="top" align="left" width="30%">
<b><a href ="#" style="margin-right:0px;" class="fav_que" id="80763">Remove From Favourite Question</a></b></td></tr>
<tr class="question_info">
<td valign="top" colspan="2">
<br /><b>Direction : </b><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">

</td></tr>
<tr class="question_info">
<td valign="top">
<b>Question : </b>
<br/><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p>Derive the expression for the time period of a simple pendulum which depends on the lenght, mass, and gravitational acceleration.</p></body></html>
</td>
<td valign="bottom" align="right"><b>QUE80763</b></td>
</tr>
<tr class="question_info">
<td valign="top" colspan="2">
<a href="#" class="show-ans">Show Answers</a>
</td>
</tr>
</td>
</tr>
<tr>
<td colspan="2">
<b>Options : </b>
</td>
</tr>
<tr>
<td class="options" colspan="2"> 1 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=b8bb97da575d595129425d5ba0cac48e.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td class="options" colspan="2"> 2 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=2fa6f58b13fc7b4dbb999484c01320ca.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td class="options" colspan="2"> 3 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=18d2b494bf784790e26d743900503669.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td class="options" colspan="2"> 4 .

<img src="http://localhost/eprime/entprm/web/ckeditor_3.6.1/plugins/ckeditor_wiris/integration/showimage.php?formula=4e3da7281a68c57642beb71a7fddd9d6.png" class="Wirisformula" align="middle">

</td>
</tr>
<tr>
<td colspan="2">
<b>Correct Answer :</b> 1
</td>
</tr>
</table>
</div>
</div>
</td>
</tr>

</tbody>
</table>
</div>

我尝试显示-隐藏内容的jQuery代码如下。虽然它对我来说效果不佳。当我单击超链接时,问题的所有内容都会被隐藏。但我希望在加载表单时隐藏每个问题的内容。单击超链接后,它应该适用于相关问题。所以请帮助我实现这一目标:

$(document).ready(function(){

$(".show-ans").each(function(){
$(this).parent().parent().parent().children("tr:not(:first)").hide();
$(this).html("Show Answer");
});

$(".show-ans").click(function(e){

e.preventDefault();
if($(this).parent().parent().parent().children("tr:last").is(":visible"))
{
$(this).parent().parent().parent().children("tr:not(:first)").hide();
$(this).html("Show Answer");
}
else
{
$(this).parent().parent().parent().children("tr:not(:first)").show();
$(this).html("Hide Answer");
}
});

});

JS Fiddle 链接是:http://jsfiddle.net/8cxL2/但它没有按照我的要求工作。

最佳答案

试试这个代码,

$(this).parent().parent().parent().children("tr:not(:first)").next().next().hide();

而不是,

$(this).parent().parent().parent().children("tr:not(:first)").hide();

看看这个 fiddle DEMO

希望这对你有帮助...

关于jquery - 对于以下场景,jQuery 代码中的隐藏/显示有什么问题?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22318662/

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