在使用bootstrap
制作后台时用到了响应式导航条,其中dropdown
组件更是用的比较多,用的多需要点击的就多,dropdown
默认鼠标左键单击才展开,如果使用鼠标放上去(hover
)就展开则会省去点击时间,这样能提高效率。
原本的改造思路是:给dropdown
元素绑定hover
事件,hover
上去的时候,执行该元素的click
事件——即把hover
同步为click
,hover
即为click
。
但想到与其自己来改造,不如先在网上搜索搜索看看有没有现成的插件,果不其然就搜索到了,托管在github
上的代码网址:查看
/* * 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);
可以看到作者在插件前面加了个分号;
,增加了插件的兼容性,因为可能上一个js
代码没写;
,如果在此不加分号则可能因为没换行导致js
出错。