javascript 使用 jQuery 检查 img src 是否为空
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Check if img src is empty using jQuery
提问by Adam
I have the following HTML:
我有以下 HTML：
<div class="previewWrapper" id="thumbPreview3">
<div class="previewContainer">
<img src="" class="photoPreview" data-width="" data-height=""><span>3</span>
</div>
</div>
And I have the following JQUERY which isn't working.
我有以下 JQUERY 不起作用。
if($('div.previewWrapper div.previewContainer img').attr('src') == '') {
alert('got me');
}
can anyone advise what I'm missing. What to get the click event to work when the src is empty.
任何人都可以建议我缺少什么。当 src 为空时如何让点击事件起作用。
thx
谢谢
采纳答案by Alessandro Minoccheri
try this code:
试试这个代码：
$(document).ready(function(){
if ($("div.previewWrapper div.previewContainer img[src=='']").click(function()){
alert('got me');
}
});
回答by Mihai Matei
You should do your verification inside document ready function
您应该在文档就绪功能中进行验证
$(document).ready(function(){
if($('div.previewWrapper div.previewContainer img').attr('src') == '') {
alert('got me');
}
});
回答by Priyank Patel
You should wrap this in document.ready function like this
您应该像这样将其包装在 document.ready 函数中
$(document).ready(function(){
if($('div.previewWrapper div.previewContainer img').attr('src') == '')
{
alert('got me');
}
});
回答by muthu
Please Check this It seems working here
请检查这个它似乎在这里工作
<div class="previewWrapper" id="thumbPreview3">
<div class="previewContainer">
<img src="" class="photoPreview" data-width="" data-height=""><span>3</span>
</div>
</div>
<input type="button" id=click value =" Click me" />
$(function () {
$("#click").click(function () {
if ($('div.previewWrapper div.previewContainer img').attr('src') == '') {
alert('got me');
}
});
});?
