element上传图片el

<el-upload   
    action=""                                             
    list-type="picture-card"
    :on-change="uploadChange"
    :file-list="fileList"
    :limit="5"                          
    :auto-upload="false">                           
    <i class="el-icon-plus"></i>
</el-upload>

uploadChange(file,fileList) {
    var reader = new FileReader();
    reader.readAsDataURL(file.raw);
    reader.onload = (e) =>{ 
        //reader.result获取base64
        let imgStr = reader.result
    }  
}