Image URL address to base64

var getBase64ByUrl = function(src, callback, outputFormat) { // console.log() let newurl; if(src.indexOf('http://files.xinan.zhanyaa.com')! =-1){ newurl=src.replace('http://files.xinan.zhanyaa.com','https://xinmedia.oss.aliyuncs.com') }else { newurl=src } var xhr = new XMLHttpRequest(); xhr.open('GET', newurl, true); xhr.responseType = 'arraybuffer'; xhr.onload = function(e) { if (xhr.status == 200) { var uInt8Array = new Uint8Array(xhr.response); var i = uInt8Array.length; var binaryString = new Array(i); while (i--) { binaryString[i] = String.fromCharCode(uInt8Array[i]); } var data = binaryString.join(''); var base64 = window.btoa(data); var dataUrl = "data:" + (outputFormat || "image/png") + "; base64," + base64; callback.call(this, dataUrl); }}; xhr.send(); }Copy the code