在使用bootstrap
製做後臺時用到了響應式導航條,其中dropdown
組件更是用的比較多,用的多須要點擊的就多,dropdown
默認鼠標左鍵單擊才展開,若是使用鼠標放上去(hover
)就展開則會省去點擊時間,這樣能提升效率。 javascript
本來的改造思路是:給dropdown
元素綁定hover
事件,hover
上去的時候,執行該元素的click
事件——即把hover
同步爲click
,hover
即爲click
。 html
但想到與其本身來改造,不如先在網上搜索搜索看看有沒有現成的插件,果不其然就搜索到了,託管在github
上的代碼網址:查看 java
在這兒就直接把代碼複製出來: git
/* * Project: Twitter Bootstrap Hover Dropdown * Author: Cameron Spear * Contributors: Mattia Larentis * * Dependencies?: Twitter Bootstrap's Dropdown plugin * * A simple plugin to enable twitter bootstrap dropdowns to active on hover and provide a nice user experience. * * No license, do what you want. I'd love credit or a shoutout, though. * * http://cameronspear.com/blog/twitter-bootstrap-dropdown-on-hover-plugin/ */ ;(function($, window, undefined) { // outside the scope of the jQuery plugin to // keep track of all dropdowns var $allDropdowns = $(); // if instantlyCloseOthers is true, then it will instantly // shut other nav items when a new one is hovered over $.fn.dropdownHover = function(options) { // the element we really care about // is the dropdown-toggle's parent $allDropdowns = $allDropdowns.add(this.parent()); return this.each(function() { var $this = $(this).parent(), defaults = { delay: 500, instantlyCloseOthers: true }, data = { delay: $(this).data('delay'), instantlyCloseOthers: $(this).data('close-others') }, options = $.extend(true, {}, defaults, options, data), timeout; $this.hover(function() { if(options.instantlyCloseOthers === true) $allDropdowns.removeClass('open'); window.clearTimeout(timeout); $(this).addClass('open'); }, function() { timeout = window.setTimeout(function() { $this.removeClass('open'); }, options.delay); }); }); }; $('[data-hover="dropdown"]').dropdownHover(); })(jQuery, this);
能夠看到做者在插件前面加了個分號;
,增長了插件的兼容性,由於可能上一個js
代碼沒寫;
,若是在此不加分號則可能由於沒換行致使js
出錯。 github
插件支持HTML
元素data-*
傳參,也支持初始化傳參。將此js
代碼放在bootstrap
本來的js
代碼後面執行便可。 bootstrap
文章同步自:大超超在思考。segmentfault