How to delete the element in the array of json object in Java-script

Recently we had a very basic requirement to delete an key value pare in the json array using Javascript.


Input data

{"invideoPromotion":{"items":[{"id":{"type":"video","videoId":"11","websiteUrl":""},"timing":{"type":"ms","offsetMs":"2222"},"customMessage":"aa","promotedByContentOwner":"vanji"}]}}

Expected business logic

When type of id is video and websiteUrl is null; websiteUrl should be removed from the payload.

Output data

{"items":[{"id":{"type":"video","videoId":"11"},"timing":{"type":"ms","offsetMs":"2222"},"customMessage":"aa","promotedByContentOwner":"vanji"}]}}

In-order to do this you can use delete functionality of the json in javascript.

Example code

	<script>
	var text = '{"invideoPromotion":{"items":[{"id":{"type":"video","videoId":"11","websiteUrl":""},"timing":{"type":"ms","offsetMs":"2222"},"customMessage":"aa","promotedByContentOwner":"vanji"}]}}'
	var obj = JSON.parse(text);
	document.writeln(JSON.stringify(obj));
	for (var i = 0; i < obj.invideoPromotion.items.length; i++) {
	if (obj.invideoPromotion.items[i].id.type == 'video') {
	if (obj.invideoPromotion.items[i].id.websiteUrl == '') {
	delete obj.invideoPromotion.items[i].id.websiteUrl;
	}
	}
	}
	document.writeln(JSON.stringify(obj));
	</script>

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