handAdd(index, row) {
		var arr = []
		arr.push(row)
		for (var i = 0; i < arr.length; i++) {
			if (this.courseArr.indexOf(arr[i]) === -1) {
				this.courseArr.push(arr[i])
				this.$message({
					message: '添加成功',			
					type: 'success'
						});
			} else {
				this.$message({				
				message: '不能重复添加数据',
				type: 'warning'
						});
				}
			}
		}