var input1 = document.querySelector('#upload');//获取input
input1.addEventListener('change',upload)
function upload(){ var oFReader = new FileReader(); oFReader.readAsDataURL(this.files[0]) oFReader.onload = function (event) { tapDatas.file = event.target.result; imgs.src = event.target.result; console.log(tapDatas, 'file文件'); } }