使用jQuery隐藏和显示列表菜单项 [英] Hide and Show list menu items using jQuery

问题描述

我有简单的垂直菜单使用列表元素，如下所示

I have simple vertical menu using list elements like below

<ul id="leftNav">
    <li id="home"><a href="/index.html">Home</a>
    </li>
    <li id="apples"><a href="/category/apples.html">Apples</a>

        <ul class="subMenu">
            <li><a href="/category/red-apples.html">Red Apples</a>
            </li>
            <li><a href="/category/green-apples.html">Green Apples</a> 
            </li>
            <li><a href="/category/golden-apples.html">Golden Apples</a>
            </li>
        </ul>
    </li>
    <li id="grapes"><a href="/category/grapes.html">Grapes</a>

        <ul class="subMenu">
            <li><a href="/category/red-grapes.html">Red Grapes</a>
            </li>
            <li><a href="/category/green-grapes.html">Green Grapes</a>
            </li>
            <li><a href="/category/black-grapes.html">Black Grapes</a>
            </li>
        </ul>
    </li>
    <li id="dry-fruits"><a href="/category/dry-fruits.html">Dry Fruits</a>

        <ul class="subMenu">
            <li id="subParent1"><a href="#">Fruits That Are Dried</a>

                <ul class="subMenu1">
                    <li><a href="/category/figs.html">Figs</a>
                    </li>
                    <li><a href="/category/dates.html">Dates</a>
                    </li>
                    <li><a href="/category/pineapples.html">Pine Apples</a>
                    </li>
                </ul>
            </li>
            <li id="subParent2"><a href="#">Nuts and Seeds</a>

                <ul class="subMenu1">
                    <li><a href="/category/chestnuts.html">Chestnuts</a>
                    </li>
                    <li><a href="/category/almonds.html">Almonds</a>
                    </li>
                    <li><a href="/category/walnuts.html">Walnuts</a>
                    </li>
                </ul>
            </li>
            <li id="subParent3"><a href="/category/bananas.html">Bananas</a>
            </li>
        </ul>
    </li>
    <li id="sale" class="expanded"><a href="/category/sale.html">Sale</a>

</ul>

我想要做的是当苹果或其子项目被点击，扩展的列表等等，所以当Grapes或其子项被点击除了Grapes部分之外的所有其他应该关闭。

What I am trying to do is when apples or its sub items are clicked I am trying keep that sections of the list expanded and so on, so when Grapes or its sub items are clicked all other should be closed except Grapes section.

我尝试使用下面的代码，苹果和葡萄是呈现其各自页面的链接，我的代码如下不工作。

I tried using code like below, but since Apples and Grapes are links which render their respective pages, my code below is not working.

$(document).ready(function() {
    $("#apples .subMenu").css("display", "block");
}); 

任何帮助或示例或建议都可以使用。

Any help or example or advice is appreciated.

推荐答案

你不断地重新加载页面 - 和javascript重载。如果您要在请求之间保存菜单的状态，请使用Cookie。

You constantly reload page - and the javascript reloads too. If you want to save the state of the menu between requests use cookies.

或者这里是一个没有重新加载页面的版本 - 那么你必须使用Ajax。 >

Or here is a version without reloading the page - then you have to use Ajax.

<script type="text/javascript">
$(document).ready(function() {

    $('#left-navigation a').click(function(){
     return false;
    });

    $(".parent-grapes > a, .parent-apples > a, .parent-dry-fruits > a").click(function () {
    var $block = $(this).parent().find(".sub-menu");
    $block.toggle();

    $.get($(this).attr('href'), function(data){
      $('#main-content').html($(data).find('#main-content').html());
    });
    return false;
    });
});
</script>

菜单只需要这个javascript（和JQuery）

The menu requires only this javascript (and JQuery)

这篇关于使用jQuery隐藏和显示列表菜单项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！