[英]How to replace ' / ' with '-' inside ObservableArray ? Knockout js
Well i am trying to pass an observable array via ajax call to my controller but i get every value there except date . 好吧,我试图通过ajax调用将一个可观察的数组传递给我的控制器,但是我得到除date之外的所有值。 i get something like '01-01-01' etc .
我得到类似'01 -01-01'之类的东西。
I found the issue but unable to fix that as i dont know how to replace /
with -
. 我发现了问题,但无法解决,因为我不知道如何用
-
替换/
。
My ObservableArray have around 10 list items each list item holds a many properties out of those startDate
holds the date like ("23/10/2014")
. 我的ObservableArray大约有10个列表项,每个列表项都具有许多属性,而
startDate
具有类似("23/10/2014")
的日期。 i just need something like ("23-10-2014")
. 我只需要类似
("23-10-2014")
东西。
Tought of posting my function's and more i hope thats not required in this case i believe . 我想发布我的函数的想法,我希望在这种情况下不需要这样做。
Let me explain with bit of code and sample data : 让我用一点代码和示例数据来解释一下:
function myarray()
{
var self=this;
self.startDate=ko.observable("");
self.name=ko.observable("");
self.place=ko.observable("");
}
MyObservableArray : MyObservableArray:
self.Main= ko.observableArray();
In between i do some stuff to load Data into self.Main
and i am sending self.Main to controller having data like below : 在这两者之间,我做了一些事情将数据加载到
self.Main
并且我正在将self.Main发送到具有如下数据的控制器中:
self.Main[0] holds :
startDate() -->gives you "23/10/2014" //individual observables inside onservable array
name() --> "jhon"
place()--> "croatia"
Likely 可能
self.Main[9] holds :
startDate() --> "29/05/2012"
name() --> "pop"
place()--> "usa"
I am trying like i want to alter the self.Main() and replace the startDate and use the same self.Main to send to my controller . 我正在尝试像我想要更改self.Main()并替换startDate并使用相同的self.Main发送到我的控制器。 Once after replacing in
self.Main
when i check date the /
should be replaced with -
. 在
self.Main
替换一次后,当我检查日期时, /
应该替换为-
。
Possible solution : i can use a different observable array and push all the VM's of Main
into it but i am trying to do on self.Main
without using other . 可能的解决方案:我可以使用其他可观察的数组,并将
Main
所有VM推入其中,但是我尝试对self.Main
进行操作,而不使用other。
If someone can show some light it is much appreciated . 如果有人可以显示一些光,那将是万分感谢。
What I got that you are facing problem in escaping /
in replace. 我得到的是您在转义
/
替换中面临问题。
Try this 尝试这个
"(23/10/2014)".replace(/\//g,"-") //returns "(23-10-2014)"
I tried something for you using simple JS 我使用简单的JS为您尝试了一些东西
var arr = [{date:"(23/10/2014)"},{date:"(23/10/2014)"},{date:"(23/10/2014)"},{date:"(23/10/2014)"}];
arr.forEach(function(obj){obj.date = obj.date.replace(/\//g,"-")});
console.log(arr) //will print date field as "(23-10-2014)" for all objects.
One solution would be to add a computed
value that returns the array with the right values. 一种解决方案是添加一个
computed
值,该值将返回具有正确值的数组。
self.Main = ko.observableArray([...values here...]);
self.MainComputed = ko.computed(function() {
var computedArray = [];
self.Main().forEach(function(item) {
var newItem = myarray(); //Create a new item.
newItem.name(item.name());
newItem.place(item.place());
newItem.startDate(item.startDate().replace(/\//g,"-"));
computedArray.push(newItem);
});
return computedArray;
});
Then use the computed value in the places where you need the values with -
. 然后在需要使用
-
的地方使用计算值。
I can think of two other ways to solve your issue, when taken into account that you want to use self.Main
: 考虑到您想使用
self.Main
,我可以想到另外两种方法来解决您的问题:
/
with -
before setting startDate
on your item. startDate
之前,将/
替换为-
。 startDate
to a computed value while storing the original value in another variable. startDate
更改为计算值。 The first solution should be pretty straight forward (provided that it is a valid solution). 第一个解决方案应该非常简单(前提是它是有效的解决方案)。
The second solution would look something like this: 第二种解决方案如下所示:
function myarray()
{
var self=this;
self.originalStartDate = ko.observable("");
self.name = ko.observable("");
self.place = ko.observable("");
self.startDate = ko.computed(function() {
if(self.originalStartDate()) {
//We can only replace if the value is set.
return self.originalStartDate().replace(/\//g,"-");
}
else {
//If replace was not possible, we return the value as is.
return self.originalStartDate();
}
});
}
Now when you set the values you do something like: 现在,当您设置值时,您将执行以下操作:
var item = myarray();
item.originalStartDate = "01/01/2014";
Then when you get the value of startDate
you would get "01-01-2014"
. 然后,当您获得
startDate
的值时,您将获得"01-01-2014"
。
I haven't used Knockout.js but you can do this with a Javascript replace: 我没有使用过Knockout.js,但是您可以使用Javascript替换来做到这一点:
var str = [your array value] ;
var res = str.replace("/", "-");
For more information: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace 有关更多信息: https : //developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String/replace
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