vue项目中 img标签加载失败方法，@error事件

@error="defImg"

<img src="123" @error="defImg" alt="" width="150" >

export default {
	data() {
	      return {
	      		defaultImg: require("@/assets/img/img_fail.png"),
	      }
	 },
	 methods: {
		 defImg(){
	                let img = event.srcElement;
	                img.src = this.defaultImg;
	                img.onerror = null; //防止闪图
            },
	 }
	 
}