<script>
$("#queryBtn").click(
function(){
var s=document.form1.image.value;
if(s==""){
alert("请选择图片");
document.form1.image.focus();
}else{
document.form1.submit();
}});
</script>
//页面代码如下
<form name="form1" class="am-form" method="post" enctype="multipart/form-data" action="/admin/home/disAdd" data-am-validator>
<input type="file" id="doc-ipt-file-1" name="image">
<button type="button" id="queryBtn" name="submit" class="am-btn am-btn-success am-radius">发布并关闭窗口</button>
</form>
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