Question

我将在代码中解释我的问题。请参阅以下代码

var monthNames = ["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];
var ctdate = (new Date()).getMonth() + 1;// getting current month
var str=new Date().getFullYear()+'';
str= str.match(/\d{2}$/);//current year is 15(as this year is 2015)
var strprev= str-1;//previous year is 14
var dynmonths = new Array();
dynmonths = monthNames.slice(ctdate).concat(monthNames.slice(0, ctdate));

//here the output comes for last 12 months starting from currentmonth-12 (i.e APR in this case) to current month (i.e MAR)
//dynmonths = ["APR","MAY","JUN","JUL","AUG","SEP","AUG","SEP","OCT","NOV","DEC","JAN","FEB","MAR"];

//I am rotating dynmonths in a for loop to get full dates i.e between (01-APR-14 to 01-MAR-15)

for (var i = 0, length = dynmonths.length; i < length; i++) {
var month = '01-' + dynmonths[i] + '-' + strcurrent;
}

但问题是month所有月份都在14。哪个错了。在01-DEC-14之后，下个月必须是01-JAN-15,01-FEB-15，依此类推。如何检查DEC in for循环和DEC年后必须更改为年+ 1

提前致谢

Answer 1

您可以声明变量bool = false并检查DEC上是否将其更改为true（或使用超过一年的计数器）：

 var monthNames = ["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];
var ctdate = (new Date()).getMonth() + 1;// getting current month
var str=new Date().getFullYear()+'';
str= str.match(/\d{2}$/);//current year is 15(as this year is 2015)
var strprev= str-1;//previous year is 14
var dynmonths = new Array();
dynmonths = monthNames.slice(ctdate).concat(monthNames.slice(0, ctdate));

//here the output comes for last 12 months starting from currentmonth-12 (i.e APR in this case) to current month (i.e MAR)
//dynmonths = ["APR","MAY","JUN","JUL","AUG","SEP","AUG","SEP","OCT","NOV","DEC","JAN","FEB","MAR"];

//I am rotating dynmonths in a for loop to get full dates i.e between (01-APR-14 to 01-MAR-15)

var isPassYear = false;

for (var i = 0, length = dynmonths.length; i < length; i++) {
    var month;
    if (isPassYear)
        //do something
    else
        month  = '01-' + dynmonths[i] + '-' + strcurrent;

    if (monthNames[11] == dynmonths[i]) {
        isPassYear = true;
    }
}

第二个选项是使用Date对象并每次附加一个月，如果你设置附加到第12个月，它会自动转到下一年。

Answer 2

使用下面的代码就可以了。

function ddd()
{
var monthNames = ["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];
var ctdate = (new Date()).getMonth() + 1;// getting current month
var str=new Date().getFullYear()+'';
str= str.match(/\d{2}$/);//current year is 15(as this year is 2015)
var strprev= str-1;//previous year is 14
var dynmonths = new Array();
dynmonths = monthNames.slice(ctdate).concat(monthNames.slice(0, ctdate));

//here the output comes for last 12 months starting from currentmonth-12 (i.e APR in this case) to current month (i.e MAR)
//dynmonths = ["APR","MAY","JUN","JUL","AUG","SEP","AUG","SEP","OCT","NOV","DEC","JAN","FEB","MAR"];

//I am rotating dynmonths in a for loop to get full dates i.e between (01-APR-14 to 01-MAR-15)

for (var i = 0, length = dynmonths.length; i < length; i++) {

if(dynmonths[i]=='JAN')
{
var str = parseInt(str)+parseInt(1);
}
var month = '01-' + dynmonths[i] + '-' + str;
    document.writeln(month);
	document.write("<br />");
   
}
}

<body onload="ddd()">

if condition基于jquery中for循环中的字符串

2 个答案: