javascript delete key from object
let person = {
firstname: 'John',
lastname: 'Doe'
}
console.log(person.firstname);
// expected output: "John"
delete person.firstname;
console.log(person.firstname);
// expected output: undefinedjavascript delete key from object
let person = {
firstname: 'John',
lastname: 'Doe'
}
console.log(person.firstname);
// expected output: "John"
delete person.firstname;
console.log(person.firstname);
// expected output: undefinedjs delete element
// delete an element from the dom
var elem = document.querySelector('#some-element');
elem.parentNode.removeChild(elem);
// keep element in dom
var elem = document.querySelector('#some-element');
elem.style.display = 'none';javascript remove object key
var obj = {a: 5, b: 3};
delete obj["a"];
console.log(obj); // {b: 3}javascript remove function from object
var obj = {
func: function(a, b) {
return a + b;
}
};
delete obj.func;
obj.func(); // Uncaught TypeError: obj.func is not a functionjs delete
// JavaScript "delete"
const Employee = {
firstname: 'John',
lastname: 'Doe'
};
console.log(Employee.firstname);
// expected output: "John"
delete Employee.firstname;
console.log(Employee.firstname);
// expected output: undefined
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/deleteCopyright © 2021 Codeinu
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