remove particular key from object javascript code example

Example 1: remove key from object array javascript

array.forEach(function(v){ delete v.bad });

Example 2: how to remove key value pair from object in javascript

delete object.keyname;

Example 3: js remove form object by key

// Example 1
var key = "Cow";
delete thisIsObject[key]; 

// Example 2
delete thisIsObject["Cow"];

// Example 3
delete thisIsObject.Cow;