AngularJs Check if a key exists in an object : There are many ways to check whether a key value exists in an object or not. You can use pure JavaScript to check a key. Here in this tutorial we are going to explain how you can check that a key exists in an object or not. You can use our online editor to edit and run the code online.
AngularJs Check if a key exists in an object Example
You can simply use the (“key” in obj1) to check a key in an object it will return false if the key does not exist in object else it will return true. Here is an example to check key in javascript/angularjs object.
AngularJs Check if a key exists in an object Example:
<div ng-app="myApp">
<div ng-controller="myController">
<br/>
<button ng-click="checkKey()">Check Key Exists</button>
<br/>
Result = {{result}}<br/>
</div>
</div>
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If you run the above example it will produce output something like this –