表单提交前预览图像
问题描述:
我的表单中有 ImageField.有没有办法在提交表单之前显示所选文件?也许在 jQuery 中是可能的?
I have ImageField in my form. Is there any way to show chosen file before submitting a form? Maybe it is possible in jQuery?
我读到我可以通过 request.FILES 以某种方式访问这些文件,但我认为在我提交表单之前它会是空的.
I read that I can somehow access this files with request.FILES, but I think it will be empty before I will submit form.
答
试试这个.
function upload_img(input) {
if (input.files && input.files[0]) {
var src = URL.createObjectURL(input.files[0])
$('#img_id').attr('src', src)
}
}
和 HTML 在下面.
AND HTML is below.
谢谢.
<form id="form_img">
<input type='file' onchange="upload_img(this);" />
<img id="img_id" src="#" alt="your image" />
</form>
这可能对您有所帮助.