input file 图片上传预览

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title></title>
    <script src="jquery.js"></script>
</head>
<body>
    <input type="file" multiple id="inputs"/>        //multiple(多文件上传)
<div id='dd'></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='"+reader.result+"'>";
    };
}
</script>
</body>
<html>

实现上传图片直接预览,避免提交后在读取图片的冗余过程

原文地址:https://www.cnblogs.com/qishaminghao/p/5995971.html