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這篇文章將為大家詳細(xì)講解有關(guān)bootstrap下拉菜單無(wú)法隱藏怎么辦,小編覺(jué)得挺實(shí)用的,因此分享給大家做個(gè)參考,希望大家閱讀完這篇文章后可以有所收獲。
下拉菜單的兩種實(shí)現(xiàn)
想必大家都知道,bootstrap為我們提供了一個(gè)下拉菜單的組件,官方也為我們提供兩種使用方法
1.標(biāo)簽指定data-toggle
<div class="dropdown"> <button type="button" class="btn dropdown-toggle" id="dropdownMenu1" data-toggle="dropdown">主題 <span class="caret"></span> </button> <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1"> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Java</a> </li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >數(shù)據(jù)挖掘</a> </li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >數(shù)據(jù)通信/網(wǎng)絡(luò)</a> </li> <li role="presentation" class="divider"></li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >分離的鏈接</a> </li> </ul> </div>
2.js調(diào)用dropdown(‘toggle')方法
<div class="dropdown"> <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="dropdown-toggle" id="dropdownMenu1" > 主題 <span class="caret"></span> </a> <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1"> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Java</a> </li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >數(shù)據(jù)挖掘</a> </li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >數(shù)據(jù)通信/網(wǎng)絡(luò)</a> </li> </ul> <button id="test">test</button> </div> </body> <script> $(function() { $("#test").click(function() { $(".dropdown-toggle").dropdown('toggle'); }) }) </script>
第二種方法有個(gè)很嚴(yán)重的問(wèn)題
就是,下拉菜單開(kāi)啟后,官方并沒(méi)有提供將它隱藏的方法,網(wǎng)上的方法死活說(shuō)再次調(diào)用dropdown(‘toggle')。。。反正我不行。
那么我想用點(diǎn)擊之外來(lái)開(kāi)啟下拉菜單呢?(必須得使用JS來(lái)控制)
我想到一個(gè)方法,使用jQuery提供的一個(gè)效果slideUp(),slideDown()
<body> <div class="dropdown"> <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="dropdown-toggle" id="dropdownMenu1" > 主題 <span class="caret"></span> </a> <ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1"> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Java</a> </li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >數(shù)據(jù)挖掘</a> </li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >數(shù)據(jù)通信/網(wǎng)絡(luò)</a> </li> <li role="presentation" class="divider"></li> <li role="presentation"> <a role="menuitem" tabindex="-1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >分離的鏈接</a> </li> </ul> <button id="test">test</button> <button id="test1">test1</button> </div> </body> <script> $(function() { $("#test").click(function() { $(".dropdown-menu").slideUp(); }) $("#test1").click(function() { $(".dropdown-menu").slideDown(); }) }) </script>
好了現(xiàn)在能實(shí)現(xiàn)開(kāi)和關(guān)了,但是速度有點(diǎn)慢?沒(méi)事slide可以通過(guò)參數(shù)調(diào)節(jié)速度甚至還有回調(diào)函數(shù)來(lái)替代$(selector).on("hidden.bs.dropdown', function () {})(對(duì)下拉菜單收回時(shí)間的監(jiān)聽(tīng)),滿分!
$(selector).slideUp(speed,callback)
speed 可選。規(guī)定元素從可見(jiàn)到隱藏的速度(或者相反)。默認(rèn)為 “normal”。 可能的值:
毫秒 (比如 1500)
“slow”
“normal”
“fast”
在設(shè)置速度的情況下,元素從可見(jiàn)到隱藏的過(guò)程中,會(huì)逐漸地改變其高度(這樣會(huì)創(chuàng)造滑動(dòng)效果)。
callback
可選。slideUp 函數(shù)執(zhí)行完之后,要執(zhí)行的函數(shù)。 除非設(shè)置了 speed 參數(shù),否則不能設(shè)置該參數(shù)。
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