1、引入js文件，如下

<script src="https://code.jquery.com/jquery-2.2.4.js"></script>
<script src="https://cdn.bootcss.com/xlsx/0.15.1/xlsx.core.min.js"></script>

2、判断文件是否是excel文件

var url=$('#excel-file').val();
if(!url){return;}
var suffix=url.substring(url.lastIndexOf(".")+1,url.length);
if(!(suffix=="xls"||suffix=="xlsx")){
	return alert("文件类型不正确");
}

3、读取excel的sheet数据

var files = e.target.files;
var fileReader = new FileReader();
 /**以二进制方式打开文件*/
fileReader.readAsArrayBuffer(files[0]);
fileReader.onload = function (ev) {
	try {
			var data = ev.target.result;
			var workbook = XLSX.read(data, { type: 'array' }),persons = [];
	} catch (e) {
			console.error(e);
			return alert('文件类型不正确!');
	}
	//遍历每张表读取
	for (var sheet in workbook.Sheets) {
		if (workbook.Sheets.hasOwnProperty(sheet)) {
			persons = persons.concat(XLSX.utils.sheet_to_json(workbook.Sheets[sheet], { raw: true, header: 1 }));
			for ( var i = 0; i <persons.length; i++){
				var person=persons[i];
				var tr='<tr id="tr-'+i+'">';
				for (var j = 0; j <person.length; j++){
					 tr+='<td>'+$.trim(person[j]?person[j]:"")+'</td>';
				}
				for (var k = 0; k < (6-person.length); k++) {
					tr+='<td></td>';
			     }
				if(person.length>1){
					tr+='<td style="padding:6px;"><a href="javascript:$(\'#tr-'+i+'\').remove();" class="btn btn-danger btn-xs">删除</a></td></tr>';
						  $("#context").append(tr);
					}
				}
			break;// 如果只取第一张表，就把beak注释取消
		}
	}
};