npm install html2canvas //下载包
import html2canvas from "html2canvas" //导入包

<el-button type="primary" @click="clickGeneratePicture">截图</el-button> //按钮

<div class="contain" ref="faultTree">

截图区域

</div>
methods: {
clickGeneratePicture() {
// let self = this;
let ref = this.$refs.faultTree; // 截图区域
console.log(ref);
html2canvas(ref, {
backgroundColor: "#142E48"
})
.then(canvas => {
let dataURL = canvas.toDataURL("image/png");
this.dataURL = dataURL;
let creatDom = document.createElement("a");
document.body.appendChild(creatDom);
creatDom.href = dataURL;
creatDom.download = "这是刚刚的截图";
creatDom.click();
})
.catch(err => {
this.$message({
message: "图片生成失败",
type: "error"
});
});
}


}


 

注意：如果页面中存在图片的话，图片地址必须为当前程序的服务端文件