上傳圖片簡單完整demo
阿新 • • 發佈:2018-12-06
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>點選頭像上傳圖片</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 = "<h1>當前瀏覽器不支援FileReader介面</h1>"; document.getElementById("xdaTanFileImg").setAttribute("disabled", "disabled"); } //選擇圖片,馬上預覽 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("開始讀取...."); } reader.onprogress = function (e) { console.log("正在讀取中...."); } reader.onabort = function (e) { console.log("中斷讀取...."); } reader.onerror = function (e) { console.log("讀取異常...."); } reader.onload = function (e) { console.log("成功讀取...."); var img = document.getElementById("avarimgs"); img.src = e.target.result; //或者 img.src = this.result; //e.target == this } reader.readAsDataURL(file) } </script> </html>