javascript append how first element
// 2018+ Version
parentElement.prepend(newFirstChild)
javascript append how first element
// 2018+ Version
parentElement.prepend(newFirstChild)
insert element at beginning of array javascript
// Use unshift method if you don't mind mutating issue
// If you want to avoid mutating issue
const array = [3, 2, 1]
const newFirstElement = 4
const newArray = [newFirstElement].concat(array) // [ 4, 3, 2, 1 ]
console.log(newArray);
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