if條件基於jquery中for循環中的字符串
[英]if condition based on a string in for loop in jquery
問題描述
我將在代碼本身中解釋我的問題。 請看下面的代碼
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}$/);//current year is 15(as this year is 2015)
var strprev= str-1;//previous year is 14
var dynmonths = new Array();
dynmonths = monthNames.slice(ctdate).concat(monthNames.slice(0, ctdate));
//here the output comes for last 12 months starting from currentmonth-12 (i.e APR in this case) to current month (i.e MAR)
//dynmonths = ["APR","MAY","JUN","JUL","AUG","SEP","AUG","SEP","OCT","NOV","DEC","JAN","FEB","MAR"];
//I am rotating dynmonths in a for loop to get full dates i.e between (01-APR-14 to 01-MAR-15)
for (var i = 0, length = dynmonths.length; i < length; i++) {
var month = '01-' + dynmonths[i] + '-' + strcurrent;
}
但是問題在於，該month所有month都需要花費14 。 哪有錯 在14年12月1日之后，下個月必須是15年1月1日，15年2月1日，依此類推。 如何在循環中檢查DEC，並且DEC年之后必須更改為year + 1
提前致謝
2 個解決方案
解決方案1
0 2015-03-22 07:48:29
您可以聲明變量bool = false並檢查您是否在DEC上將其更改為true（或使用超過一年的計數器）：
var monthNames = ["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];
var ctdate = (new Date()).getMonth() + 1;// getting current month
var str=new Date().getFullYear()+'';
str= str.match(/\d{2}$/);//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;
}
}
第二種選擇是使用Date對象，並且每次將他的月份追加一個，如果您將append設置為第12號，它將自動轉到下一年。
解決方案2
0 已采納 2015-03-22 08:35:58
使用下面的代碼，它將起作用。
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 (ie APR in this case) to current month (ie 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 ie 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()">
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