明细表，根据开始日期的值，+1年赋值给结束日期JS

<script>
 
jQuery(document).ready(function(){
    
    
    var yxqqsrq = WfForm.convertFieldNameToId("yxqqsrq", "detail_1");
    var yxjzrq = WfForm.convertFieldNameToId("yxjzrq", "detail_1");
　　//字段值改变事件
    WfForm.bindDetailFieldChangeEvent(yxqqsrq,function(id,rowIndex,value){
        console.log("WfForm.bindDetailFieldChangeEvent--",id,rowIndex,value);
        let lastyeardate = getOneYearLast(value)
        WfForm.changeFieldValue(yxjzrq+"_"+rowIndex, {value:lastyeardate});
    });
    
    //明细新增事件
    WfForm.registerAction(WfForm.ACTION_ADDROW+"1", function(i){
        let yxqqsrqvalue = WfForm.getFieldValue(yxqqsrq+"_"+i);
        let lastyeardate = getOneYearLast(yxqqsrqvalue)
        WfForm.changeFieldValue(yxjzrq+"_"+i, {value:lastyeardate});
    });
    
　　//保存后页面刷新
    var rowArr = WfForm.getDetailAllRowIndexStr("detail_1").split(",");
    for(let j=0; j<rowArr.length; j++){
        let i = rowArr[j];
        let yxqqsrqvalue = WfForm.getFieldValue(yxqqsrq+"_"+i);
        let lastyeardate = getOneYearLast(yxqqsrqvalue)
        WfForm.changeFieldValue(yxjzrq+"_"+i, {value:lastyeardate});
    }
        
   //提交校验     
    WfForm.registerCheckEvent(WfForm.OPER_SAVE+","+WfForm.OPER_SUBMIT, function(callback){
        //开始日期和截止日期只能365天之内
        let rowArr = WfForm.getDetailAllRowIndexStr("detail_1").split(",");
        for(let j=0; j<rowArr.length; j++){
            let i = rowArr[j];
            let yxqqsrqvalue = WfForm.getFieldValue(yxqqsrq+"_"+i);
            let yxjzrqvalue = WfForm.getFieldValue(yxjzrq+"_"+i);
            let diffdate = daysDiff(new Date(yxqqsrqvalue), new Date(yxjzrqvalue))
            console.log(diffdate)
            if(Number(diffdate)>366){
                alert("起始日期和截止日期不能超过366天！");
                return;
            }
            
        }
        callback();    //继续提交需调用callback，不调用代表阻断
    });
});

//加一年
function getOneYearLast(date){
var date = new Date(date);
var year = date.getFullYear()+1;
var month = date.getMonth() + 1;
var day = date.getDate();
if (month < 10) {
    month = "0" + month;
 }
 if (day < 10) {
      day = "0" + day;
 }
var enTime = year + "-" + month + "-" + day;
return enTime
}

//计算两日期相差天数
function daysDiff(date, date2){
    return Math.ceil(Math.abs(date - date2) / 86400000);
}
</script>