element 圖片上傳
阿新 • • 發佈：2020-10-26
<el-upload
class="avatar-uploader"
action="123" //這個路徑不重要，可以隨便寫
:show-file-list="false"
:on-success="handleAvatarSuccess"
:on-change="onchange"
:before-upload="beforeAvatarUpload">
<img v-if="imageUrl" :src="imageUrl" class="avatar">
<i v-else class="el-icon-plus avatar-uploader-icon"></i>
</el-upload>
<script>
export default {
data() {
return {
imageUrl: '',
};
},
methods: {
handleAvatarSuccess(res, file) {
this.imageUrl = URL.createObjectURL(file.raw);
},
beforeAvatarUpload(file) {
const isJPG = file.type === 'image/jpeg';
const isLt2M = file.size / 1024 / 1024 < 2;if (!isJPG) {
this.$message.error('上傳頭像圖片只能是 JPG 格式!');
}
if (!isLt2M) {
this.$message.error('上傳頭像圖片大小不能超過 2MB!');
}
return isJPG && isLt2M;
},
//當上傳圖片後，呼叫onchange方法，獲取圖片本地路徑
onchange(file,fileList){
var _this = this;
var event = event || window.event;
var file = event.target.files[0];
var reader = new FileReader();
//轉base64
reader.onload = function(e) {
_this.imageUrl = e.target.result //將圖片路徑賦值給src
}
reader.readAsDataURL(file);
}
}
}
</script>