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Input file upload image preview function example code

高洛峰

Dec 09, 2016 am 09:55 AM

Input file upload image preview is actually very simple, but it feels amazing if you have never done it before. Today I will take off its mysterious veil. In fact, the principle is really simple. Everyone can understand it through a piece of code below.

The specific code is as follows:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="jquery.js"></script>
</head>
<body>
<input type="file" multiple id="inputs"/> //multiple(多文件上傳)
<div id=&#39;dd&#39;></div>
<script>
$(document).ready(function () {
$("#inputs").change(function () {
var fil = this.files;
for (var i = 0; i < fil.length; i++) {
reads(fil[i]);
}
});
});
function reads(fil){
var reader = new FileReader();
reader.readAsDataURL(fil);
reader.onload = function()
{
document.getElementById("dd").innerHTML += "<img src=&#39;"+reader.result+"&#39;>";
};
}
</script>
</body>
<html>

Achieve direct preview of uploaded images, avoiding the redundant process of reading images after submission

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