//获取指定位数的序号(如:003)
var GetSerialNum = function(num,length){
var serialNum = (Array(length).join(0) + num).slice(-length);
console.log(serialNum);
return serialNum;
}
//获取指定日期格式的日期
var getFullDataStr = function (dateformat) {
var dateStr = "";
var mydate = new Date();
var year = mydate.getFullYear(); //console.log(typeof(year)); 可输出值的类型
var month = (mydate.getMonth() + 1) < 10 ? '0' + (mydate.getMonth() + 1) : (mydate.getMonth() + 1) + '';
var day = mydate.getDate() < 10 ? '0' + mydate.getDate() : mydate.getDate() + '';
var hours = mydate.getHours() < 10 ? '0' + mydate.getHours() : mydate.getHours() + '';
var minutes = mydate.getMinutes() < 10 ? '0' + mydate.getMinutes() : mydate.getMinutes() + '';
var seconds = mydate.getSeconds() < 10 ? '0' + mydate.getSeconds() : mydate.getSeconds() + '';
//var minseconds = mydate.getMilliseconds().toString().substring(0,2);
var minseconds = mydate.getMilliseconds().toString();
if (dateformat.toLowerCase() == "yyyy") {
dateStr = year;
}
else if (dateformat.toLowerCase() == "yyyymm") {
dateStr = year + month;
}
else if (dateformat.toLowerCase() == "yyyymmdd") {
dateStr = year + month + day;
}
else if (dateformat.toLowerCase() == "yyyymmddhhmmss") {
dateStr = year + month + day + hours + minutes + seconds;
}
else if (dateformat.toLowerCase() == "yymmddhhmmss") {
dateStr = year.toString().substring(2, 4) + month + day + hours + minutes + seconds;
}
else if (dateformat.toLowerCase() == "yyyymmddhhmmssms") {
dateStr = year + month + day + hours + minutes + seconds + minseconds;
}
else if (dateformat.toLowerCase() == "yymmddhhmmssms") {
dateStr = year.toString().substring(2, 4) + month + day + hours + minutes + seconds + minseconds;;
}
else {
dateStr = year + month + day;
}
return dateStr;
}
//获取单据的序列号
var GetSerialBillNo = function(num,length,format){
//获取序号值
var serialNum = GetSerialNum(num,length);
//获取日期字符串
var serialdate = getFullDataStr("yyyymmdd");
//拼接对应单号
var serialBillNo =serialdate+ serialNum;
console.log(serialBillNo);
return serialBillNo;
}
<body>
<button onClick="GetSerialNum(5,4)">获取序号值</button>
<button onClick="GetSerialBillNo(8,6,'yyyymmdd')">获取单据号</button>
</body>
根据上面输出的结果
0005
000008
20201201000008
注意:真正调用的时候,自己传递函数的参数值,记得把打印去掉
平时多记记,到用时才能看看,记录你的进步,分享你的成果