Javascript string manipulation, combining numbers with strings

Question

I am trying to get values from a data set. My function has to loop from 1 to 7 to get my opening hours for 7 days. what i need to do is:

Where openHours[i] the "i" stands for a number between 1 and 7. I would like to attach that number on the word "openHours" in order to create a new word ex. "openHours1"

What would be the best way to do that? The "alert(i);" is working fine and is generating numbers from 1 to 7. I just need to attach those numbers on the string.

So far i tried everything that can comes in my head but I don't use javascript often so i am kind of stuck.

Thanks for the help.

function hoursFunction()
{  
var i =0;
alert("Hello");
for(i=1;i<8;i++)
{
    alert(i);
    alert(hoursForm.openHours[i].value);
}

}

Do you mean string concatenation? Javascript is dynamic typed, so doing something like alert('hello' + 1) will give you 'hello1'. — Florian Margaine
– Florian Margaine, Commented Apr 6, 2012 at 20:49
@FlorianMargaine yes that's what I meant. Sorry for the wording. The value of openHours is a number the thing is the correct variable would be "openHours1" where the number 1 would get attached to the string somehow. — Geo
– Geo, Commented Apr 6, 2012 at 20:55

andrewpthorp · Accepted Answer · 2012-04-06 20:55:59Z

1

EDIT: After your comment, it would appear you are trying to get the following variable:

alert(document.getElementById("openHours" + i).value);

However, I would strongly consider using jQuery (or another library) to handle this, and you could do the following:

$("#openHours" + i).val();

answered Apr 6, 2012 at 20:55

andrewpthorp

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Ry- · Accepted Answer · 2012-04-06 20:55:49Z

0

You can use the bracket notation to access properties - they're the same thing as indices in JavaScript.

alert(hoursForm[openHours + i].value);

answered Apr 6, 2012 at 20:55

Ry-♦

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