the function of online preview of uploaded pictures in the project uses the plug-in hhuploadify to see that the url address of the source code is formed through src = window.URL.createObjectURL (file); to form url and then preview online. Is there a way to directly convert file objects into base64 coding without having to regenerate url in such a format as blob:// or whether the generated url like blob:// can be converted into base64 coding
? use FileReader.readAsDataURL :
var preview = document.querySelector('img');
var file = document.querySelector('input[type=file]').files[0];
var reader = new FileReader();
reader.addEventListener("load", function () {
preview.src = reader.result;
}, false);
if (file) {
reader.readAsDataURL(file);
}Previous: Laravel module cannot be copied
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