const beforeUpload = (file: any) => {
const isLt2M = file.size / 1024 / 1024 < 2;
if (!isLt2M) {
ElMessage.error('上传头像图片大小不能超过 2MB!');
}
// 上传图片前处理函数
const isSize = new Promise(function(resolve, reject) {
let width = 240;
let height = 240;
let _URL = window.URL || window.webkitURL;
let image = new Image();
image.onload = function() {
let valid = image.width > width && image.height > height && image.width == image.height;
valid ? resolve() : reject();
};
image.src = _URL.createObjectURL(file);
}).then(
() => {
return file;
},
() => {
ElMessage.error("请上传240*240px以上,1:1的图标");
return Promise.reject();
}
);
return isLt2M && isSize;
}