<h1 id="heading-indexwhere">indexWhere()</h1>
<ul>
<li>The <code>indexWhere()</code> method is used to find the index of an element in a list. It finds the index of the first occurrence of an element that satisfies the given condition.
</li>
<li>The method <code>indexWhere()</code> returns the list’s first index that matches the given condition.
</li>
</ul>
<h1 id="heading-example">Example</h1>
<pre><code class="lang-dart">void main() {
 var nums = [1, 2, 3, 4, 5];
 var one = nums.indexWhere((element) =&gt; element % 2 == 0);
 print(nums.indexWhere((element) =&gt; element &gt; 5)); // 5
 print(one);
 // print(nums.indexWhere((element) =&gt; element * 2));
}
</code></pre>
<pre><code class="lang-dart">-1
1

Exited.
</code></pre>

# indexWhere()

* The `indexWhere()` method is used to find the index of an element in a list. It finds the index of the first occurrence of an element that satisfies the given condition.
    
* The method `indexWhere()` returns the list’s first index that matches the given condition.
    

# Example

```dart
void main() {
  var nums = [1, 2, 3, 4, 5];
  var one = nums.indexWhere((element) => element % 2 == 0);
  print(nums.indexWhere((element) => element > 5)); // 5
  print(one);
  // print(nums.indexWhere((element) => element * 2));
}
```

```dart
-1
1

Exited.
```

Dart Iterable indexWhere()

indexWhere()

Example