[英]array in for loop merge with second for loop array javascript
I have a problem merging 2 arrays in an for loop see code: 我在for循环中合并2个数组时遇到问题,请参见代码:
function count_days(tijden,datums ){
var length = tijden.length;
element = null;
var similarities =0;
var backup = [];
var dateArray =[];
for (var i = 0; i <length; i++) {
element = tijden[i];
tijden[i] = element;
dateArray = getDates(new Date(tijden[i]['begin']), new Date(tijden[i]['eind']));
}
The problem is that when the code is running i get one array for each loop. 问题是当代码运行时,我为每个循环获取一个数组。 I need to get one array with the data from all loops.
我需要从所有循环中获取一个数组。 I tryde concat but didnt get this to work
我试一下concat但没有让它起作用
It should be... 它应该是...
dateArray.push(
getDates(new Date(tijden[i]['begin']), new Date(tijden[i]['eind']))
);
... or, if getDates
method returns an array and you want dateArray
to be flattened: ...,或者,如果
getDates
方法返回一个数组并且您希望将dateArray
平:
Array.prototype.push.apply(dateArray,
getDates(new Date(tijden[i]['begin']),
new Date(tijden[i]['eind']))
);
As it stands now, you just rewrite dateArray
at each step of for
loop. 现在,您只需在
for
循环的每个步骤中重写dateArray
。
A sidenote: this... 旁注:这个...
element = tijden[i];
tijden[i] = element;
... makes exactly zero sense: at least one of these lines (most probably the latter) is redundant. ...的意义完全为零:这些行中的至少一条(很可能是后者)是多余的。 Remove this - and code becomes easier to read:
删除它-代码变得更容易阅读:
var element, currDates;
for (var i = 0, i < length; i++) {
element = tijden[i];
currDates = getDates(new Date(element.begin), new Date(element.eind));
Array.prototype.push.apply(dateArray, currDates);
}
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