JS gets the base64 format of the picture via FileReader

1//Create a FileReader object

2 var reader = new FileReader (); 3 4//Bind Load Event 5 Reader.onload = function (e) {6 console.log (E.target.result); 7} 8 9//Read data for file Object Reader.read Asdataurl (Document.queryselector ("Input[type=file]"). Files[0]); The Load event is triggered when the FileReader object reads the data successfully through Readasdataurl. The value of the result property in target, which is the Base64 data of the file

JS gets the base64 format of the picture via FileReader