file upload preview javascript code example
Example 1: preview image file upload javascript
<input type="file" accept="image/*" onchange="loadFile(event)">
<img id="output"/>
<script>
var loadFile = function(event) {
var output = document.getElementById('output');
output.src = URL.createObjectURL(event.target.files[0]);
output.onload = function() {
URL.revokeObjectURL(output.src)
}
};
</script>
Example 2: file upload preview in html
<html>
<head>
<script type='text/javascript'>
function preview_image(event)
{
var reader = new FileReader();
reader.onload = function()
{
var output = document.getElementById('output_image');
output.src = reader.result;
}
reader.readAsDataURL(event.target.files[0]);
}
</script>
<style>
body
{
width:100%;
margin:0 auto;
padding:0px;
font-family:helvetica;
background-color:#0B3861;
}
#wrapper
{
text-align:center;
margin:0 auto;
padding:0px;
width:995px;
}
#output_image
{
max-width:300px;
}
</style>
</head>
<body>
<div id="wrapper">
<input type="file" accept="image/*" onchange="preview_image(event)">
<img id="output_image"/>
</div>
</body>
</html>