Javascript 带有类的 div 的 jquery 选择器
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jquery selector for div with class
提问by Patrick Jeon
I tried this below. I think the return Object of $("div.tab_select")[0]isn't a jQuery Object, but I can't even use pure javascript method.
我在下面试过这个。我认为$("div.tab_select")[0]的返回对象不是 jQuery 对象，但我什至不能使用纯 javascript 方法。
Is there any way to make it jQuery Object? for instance $($("div.tab_select")[0])..I know this's silly;
有没有办法让它成为jQuery对象？例如$($("div.tab_select")[0])..我知道这很愚蠢；
Thank you for reading.
感谢您的阅读。
var tmp = $("div.tab_select")[0];
alert(tmp); //This gives me HTMLDivElement collectly. But I can't use any of javascript..
alert(tmp.nodeName); //But this give me error "Uncaught TypeError: Cannot read property 'nodeName' of undefined"
tmp.hide(); //Neither, I can't use this.
回答by jmar777
// all divs with tab_select class
$('div.tab_select')
// first div with tab_select class
$('div.tab_select:first')
// or CSS pseudo selector which is slightly faster than the first jQuery
// shortcut
$('div.tab_select:first-of-type')
// or
$('div.tab_select').first()
// or
$('div.tab_select:eq(0)')
// or
$('div.tab_select').eq(0)
回答by Sagiv Ofek
if you want a jQuery object use var tmp = $("div.tab_select:first")instead.
如果你想要一个 jQuery 对象，请var tmp = $("div.tab_select:first")改用。
var tmp = $("div.tab_select")[0]will return the DOM element (if exists)
var tmp = $("div.tab_select")[0]将返回 DOM 元素（如果存在）
回答by dav1d
Just do $(tmp). [0] gives you the HTML-Element not the JQuery instance.
就做$(tmp)。[0] 为您提供 HTML-Element 而不是 JQuery 实例。
