Im trying to check an array for a value as such. not sure how to go about. If anyone could help that would be great.
var array1 = [0];
if (DONT KNOW WHAT TO SAY TO CHECK FOR 0 IN THE ARRAY) {
Do something
}
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It depends on structure of your array!Rayon– Rayon2016-04-16 11:56:50 +00:00Commented Apr 16, 2016 at 11:56
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You need to tell us what would be sample structures of the array in your context.gurvinder372– gurvinder3722016-04-16 11:58:22 +00:00Commented Apr 16, 2016 at 11:58
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5 Answers
simple like this
if (array1[0] == "0") {
//Do something
}
and if you have more values in your array you should use indexOf()
var array1 = [0, 3, 1, 4];
if (array1.indexOf(0) != -1) {
//Do something
}
Comments
DONT KNOW WHAT TO SAY TO CHECK FOR 0 IN THE ARRAY
If you want to check for 0 in the array1 (anywhere in the array), then use indexOf
if (array1.indexOf(0) != -1)
{
Do something
}
3 Comments
Henderikus Parekowhai
whats the difference between indexOf and contains?
gurvinder372
@HenderikusParekowhai Array doesn't have built-in
contains method developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…gurvinder372
@HenderikusParekowhai Also
contains may mean that you are looking for value which has 0 as substring.if(array1.indexOf(0) == 0){
//Do your code
}
Comments
Also you can do
for(var i in array){
if(array[i] == 0){
//Do all the things
}
}
Comments
You need to access the array. If you have no idea what place the array is you need to go through the array.
for (var i = 0; i < array.length; i++) {
if (array[i] == 0) {
//Do all the things
}
}
1 Comment
Cayce K
forgot all about indexOf. this is very inefficient so I would say go with those!! :D