请假 
      
     
//方法体里面leave() {
    　　 MessageBox.prompt('请假理由', {	inputValidator: (val) => {		 if (val === null) {		　　 return true;//初始化的值为null，不做处理的话，刚打开MessageBox就会校验出错，影响用户体验		 }		 return !(val.length < 100)	　　}, inputErrorMessage: '不能小于100字'	 }).then((val) => {		this.loading = true;		var leaveForm = {			trainId: this.trainInfo.trainId,			leaveFlow: this.trainInfo.leaveFlow,			leaveReason: val,		};		this.postRequest("/tmsproxy/trainLeave", leaveForm).then(resp => {			this.loading = false;			if(resp.data.status == "success") {				MessageBox.alert(resp.data.msg, "");			}		})	 }, () => {		 console.info('cancel')	  })}