检查 jQuery 中 DIV 的内容是否为空
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Check if the content of a DIV is empty in jQuery
提问by RayLoveless
How do I use jQuery to check to see if the content of a <div>
is empty?
如何使用 jQuery 检查 a 的内容<div>
是否为空?
I tried this and is doesn't seem to be printing the correct values.
我试过了,似乎没有打印正确的值。
...
var unframed_items = $("#unframed-items");
alert(unframed_items.html().length);
...
<div id="unframed-items"> </div>
...
回答by user113716
If you mean really empty, use the empty-selector
[docs]:
如果您的意思是真的空,请使用empty-selector
[docs]:
alert( !!$("#unframed-items:empty").length )
or
或者
alert( $("#unframed-items").is(':empty') )
If you consider whitespace-only to be empty, then use the jQuery.trim()
[docs]method:
如果您认为仅空格为空,则使用jQuery.trim()
[docs]方法:
alert( !$.trim( $("#unframed-items").html() ) );
回答by Rohit
<div id="portfolio"><!--portfolio-->
<div id="portfolio-works"><!--portfolio-works-->
<div class="portfolio-works-container"></div>
</div><!--/portfolio-works-->
$(document).ready(function(){
if($('div.portfolio-works-container').is(':empty')){
$('div#portfolio').hide();
}
});
回答by Mojtaba Shateri Niasar
Use $('#elementId').is(':empty')
.
使用$('#elementId').is(':empty')
.