Javascript: Generic get next item in array

Question

I am trying to make a JavaScript function that will search an array of strings for a value and return the next string. For example, if an array is built such that an item is followed by its stock code, I want to search for the item and have the stock code written. ``` var item = (from user input); //some code to get the initial item from user function findcode(code){ var arr = ["ball", "1f7g", "spoon", "2c8d", "pen", "9c3c"]; //making the array for (var i=0; i<arr.lenth; i++){ //for loop to look through array arr.indexOf(item); //search array for whatever the user input was var code = arr(i+1); //make the variable 'code' whatever comes next break; } } document.write(code); //write the code, I.e., whatever comes after the item ``` (I'm sure it's obvious I'm new to JavaScript, and while this is similar to a number of other questions I found, those seemed to have more involved arrays or more complex searches. I can't seem to simplify them for my needs.)

Accepted Answer

You've almost got it right, but the syntax is `arr[x]`, not `arr(x)`:

```
index = array.indexOf(value);
if(index >= 0 && index < array.length - 1)
   nextItem = array[index + 1]
```

BTW, using an object instead of an array might be a better option:

```
data = {"ball":"1f7g", "spoon":"2c8d", "pen":"9c3c"}
```

and then simply

```
code = data[name]
```

Javascript: Generic get next item in array

Solution

Problem