js 实现图片上传

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');
        }
    }