webkafali webkafali - 1 year ago 103
Javascript Question

drag drop images input file and preview before upload

I want to create a div attach drag drop feature and when someone click it they can choose their image.

I have coded something and its can
- click div and choose your image
- preview your image before upload

you can check my fiddle

css

.uploader {width:300px;height:350px;background:#f3f3f3;border:2px dashed #e8e8e8;}


javascript

var imageLoader = document.getElementById('filePhoto');
imageLoader.addEventListener('change', handleImage, false);

function handleImage(e) {
var reader = new FileReader();
reader.onload = function (event) {

$('.uploader').html( '<img width="300px" height="350px" src="'+event.target.result+'"/>' );
}
reader.readAsDataURL(e.target.files[0]);
}


html

<div class="uploader" onclick="$('#filePhoto').click()">click here or drag here your images for preview and set userprofile_picture data</div>
<input type="file" name="userprofile_picture" id="filePhoto" style="display:block;width:185px;" />


you can check
http://jsfiddle.net/ELcf6/

Answer Source

You can do this with little css tricks. input element accepts drop. I changed your code like below:

css

.uploader {
    position:relative; 
    overflow:hidden; 
    width:300px; 
    height:350px;
    background:#f3f3f3; 
    border:2px dashed #e8e8e8;
}

#filePhoto{
    position:absolute;
    width:300px;
    height:400px;
    top:-50px;
    left:0;
    z-index:2;
    opacity:0;
    cursor:pointer;
}

.uploader img{
    position:absolute;
    width:302px;
    height:352px;
    top:-1px;
    left:-1px;
    z-index:1;
    border:none;
}

javascript

var imageLoader = document.getElementById('filePhoto');
imageLoader.addEventListener('change', handleImage, false);

function handleImage(e) {
    var reader = new FileReader();
    reader.onload = function (event) {
        $('.uploader img').attr('src',event.target.result);
    }
    reader.readAsDataURL(e.target.files[0]);
}

html

<div class="uploader" onclick="$('#filePhoto').click()">
    click here or drag here your images for preview and set userprofile_picture data
    <img src=""/>
    <input type="file" name="userprofile_picture"  id="filePhoto" />
</div>

i hope it helps. You can check http://jsfiddle.net/ELcf6/4/, and other version http://jsfiddle.net/ELcf6/8/

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