blob浏览器兼容问题解决

blob浏览器兼容问题
问题： blob格式在不同浏览器下载有差异

	this.axios({
 	     url: window.API_HOST + '/camp/exportAccountBook',
 	     method: 'post',
 	     data: params,
 	     responseType: 'blob'
 	    }).then(res => {
 			const link = document.createElement('a')
 			let blob = new Blob([res.data], {type: 'application/vnd.ms-excel'})
 			link.style.display = 'none'
 			link.href = URL.createObjectURL(blob)
 			// link.download = res.headers['content-disposition'] //下载后文件名
 			link.download = 'aa.xlsx'//下载的文件名
 			document.body.appendChild(link)
 			link.click()
 			document.body.removeChild(link)
 	})

解决：

var blob = new Blob([html], { type: "application/vnd.ms-excel" });
//判断ie
 if (window.navigator && window.navigator.msSaveOrOpenBlob) {
   window.navigator.msSaveOrOpenBlob(blob, "aaa.xls");
 } else {
   var a = document.createElement("a");
   a.href = URL.createObjectURL(blob);
   a.download = "aaa.xls";
   document.body.appendChild(a);
   a.onclick = function() {
     document.body.removeChild(a);
   };
   a.click();
 }

ok啦