prepend to array javascript
const names = ["Bob", "Cassandra"]
names.unshift("Alex")
names === ["Alex", "Bob", "Cassandra"]// Build an array of test data.
var data = [ "X" ];
// Unshift data onto the array. Unshift() prepends elements to
// the beginning of the given array. Note that it can take more
// than one argument. In the output, notice that when unshift()
// takes multiple arguments, they are prepended in a right-to-left
// order (mimicing their appearence in the arguments list).
data.unshift( "A" );
data.unshift( "B", "C" );
// Output resultant array.
console.log( data );
Also in JavaScript:
- How to parse POST requests with express nodejs
- javascript to redirect to another page after 5 seconds
- react npm build not working
- js get id value
- js form for website
- ruby on rails test if all parameters in json request are here
- turning an hex code to rgb discord.js
- js var part of var name
- jquery if checkbox is checked
- comment in jsp file
- javascript get text between two words
- integers to space separated string in javascript
- redux saga fetch api
- how to lock device orientation using css and javascript
- javascript find the min in array of numbers
- resize image react native
- how to query chain an id in an id javascript
- typeof array javascript
- input search picture jquery
- javascript key pressed enter
- convert an array of strings to numbers
- es6 compare two arrays
- navigation.openDrawer is not a function react native
- js rounding