how to delete a key from an object javascript code example
Example 1: javascript delete key from object
let person = {
firstname: 'John',
lastname: 'Doe'
}
console.log(person.firstname);
delete person.firstname;
console.log(person.firstname);
Example 2: javascript remove object key
var obj = {a: 5, b: 3};
delete obj["a"];
console.log(obj);
Example 3: javascript remove function from object
var obj = {
func: function(a, b) {
return a + b;
}
};
delete obj.func;
obj.func();
Example 4: how to delete object property of array javascript
array.forEach(function(v){ delete v.bad });
Example 5: js remove form object by key
var key = "Cow";
delete thisIsObject[key];
delete thisIsObject["Cow"];
delete thisIsObject.Cow;