关于formdata:vue-上传图片判断大小尺寸
uploadImg(e, record, index) { const file = e.target.files[0]; // 判断上传图片的大小 限度 if (file.size / 1024 < 1000) { const that = this; let imgWidth = ""; let imgHight = ""; // 限度图片的尺寸 为2000*1500 const isSize = new Promise(function(resolve, reject) { const _URL = window.URL || window.webkitURL; const img = new Image(); img.onload = function() { imgWidth = img.width; imgHight = img.height; const valid = img.width === parseInt(2000) && img.height === parseInt(1500); valid ? resolve() : reject(); }; img.src = _URL.createObjectURL(file); }).then( () => { const formData = new FormData(); formData.append("files", file); that.loading = true; // 这里是调取接口 接口名字(formData) .then(res => { // 接口胜利操作啥的 that.$message.success("图片上传胜利"); }) .finally(() => { that.loading = false; }); }, () => { // 图片尺寸不对 提醒 this.$message.info( `图片尺寸应为2000x1500,以后图片尺寸为${imgWidth}x${imgHight}` ); return Promise.reject(); } ); } else { this.$message.info("图片最大1000k"); }}