js上傳圖片並預覽
阿新 • • 發佈:2018-03-04
width view 直接 ali 上傳圖片並預覽 class tar result null
一:html代碼
<input id="upload_image" type="file" accept="image/*" capture="camera"onchange="upload(‘#upload_image‘, ‘#preview_image‘);"/> <img id="preview_image" src="" style="width:80%;text-align:center;">
二:js代碼
//照片 var photo = null //上傳圖片 function upload(upload_id, preview_id) {var $upload = document.querySelector(upload_id), $preview = document.querySelector(preview_id), file = $upload.files[0], reader = new FileReader(); reader.readAsDataURL(file); reader.onload = function (e) { //獲取照片 photo = e.target.result $preview.setAttribute("src", photo); }; };
上傳圖片:直接把photo上傳即可,photo保存了圖片的base64編碼。
js上傳圖片並預覽