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上傳圖像到服務器,圖像是從,然後我想通過ajax,服務器端使用python燒瓶框架,圖像到服務器發佈圖像,它需要base64編碼格式,問題是我怎麼能使用JavaScript將圖像轉換爲base64格式。後base64編碼圖像到服務器使用javascript
\t $('.img-upload-btn').click(function(event) {
\t \t $("#img-upload").click();
\t });
\t $('#img-upload').on('change', function(event) {
\t \t event.preventDefault();
\t \t var img = $("#img-upload")[0].files[0];
\t \t console.log(toDataUrl(img.name));
\t \t var img_data = {
\t \t \t "spec_id": 212,
\t \t \t "file": img
\t \t };
\t \t console.log(img);
\t \t $.ajax({
\t \t \t url: 'http://10.0.0.75:5000/api/check_specification',
\t \t \t type: 'POST',
\t \t \t dataType: 'json',
\t \t \t contentType: "application/json; charset=utf-8",
\t \t \t success: function(data) {
\t \t \t \t alert(data);
\t \t \t },
\t \t \t failure:function(errorMsg) {
\t \t \t \t alert(errorMsg);
\t \t \t }
\t \t });
\t \t
\t });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button class="btn-search full-width img-upload-btn">upload-img</button>
<input type="file" id="img-upload" >
的可能的複製[你怎麼可以編碼在JavaScript字符串爲Base64?](http://stackoverflow.com/questions/246801/how-can-you-encode-a-string-to-base64 -in-javascript) –