jQuery 如何使用jquery检查输入类型=“文件”是否有文件?
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How to check an input type="file" has a file or not using jquery?
提问by ACP
I have a file upload control <input id="File1" type="file" />
in my page... How to check an input type="file" has a file or not using jquery on click of a button upload
?
我的页面中有一个文件上传控件<input id="File1" type="file" />
...如何在单击按钮时使用 jquery 检查输入类型 =“文件”是否有文件upload
?
回答by Quentin
if (jQuery('#File1').val()) { /* There are files */ }
回答by Hardik Sondagar
You should use "required" instead of JQuery. By just one attribute it'll check input=file has file or not. Example:
您应该使用“必需”而不是 JQuery。仅通过一个属性,它就会检查 input=file 是否有文件。例子:
<input type="file" required/>
回答by jAndy
$('#upload').bind('click', function(e){
if( $('#File1').val() != ""){
// file selected
}
else{
// no file selected
}
});