不懂jquery实现上传图片功能的方法？其实想解决这个问题也不难，下面让小编带着大家一起学习怎么去解决，希望大家阅读完这篇文章后大所收获。

代码：

<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title>点击头像上传图片</title><style>*{ margin:0; padding: 0;}div,#avarimgs,#xdaTanFileImg{ width: 100px; height: 100px;}div{ margin:50px auto; position: relative;}#xdaTanFileImg{ position: absolute; top: 0; left: 0; opacity: 0;}</style></head><body> <div> <input type="file" name="pclogo" id="xdaTanFileImg" onchange="xmTanUploadImg(this)" accept="image/*"> <img src="https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=3787285033,4172246344&fm=26&gp=0.jpg" class="img-circle img-thumbnail img-responsive" id="avarimgs"> </div></body><script src="http://code.jquery.com/jquery-2.1.1.min.js"></script><script type="text/javascript"> if (typeof FileReader == 'undefined') { document.getElementById("xmTanDiv").InnerHTML = "<h2>当前浏览器不支持FileReader接口</h2>"; document.getElementById("xdaTanFileImg").setAttribute("disabled", "disabled");}//选择图片，马上预览 function xmTanUploadImg(obj) { console.log(obj) var file = obj.files[0]; console.log(obj);console.log(file); console.log("file.size = " + file.size); var reader = new FileReader(); reader.onloadstart = function (e) { console.log("开始读取...."); } reader.onprogress = function (e) { console.log("正在读取中...."); } reader.onabort = function (e) { console.log("中断读取...."); } reader.onerror = function (e) { console.log("读取异常...."); } reader.onload = function (e) { console.log("成功读取...."); var img = document.getElementById("avarimgs"); img.src = e.target.result; //或者 img.src = this.result; //e.target == this } reader.readAsDataURL(file) }</script> </html>

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