find and replace js array code example

Example 1: replace array element javascript

// Replace 1 array element at index with item 
arr.splice(index,1,item);

Example 2: javascript replace array element

array.splice(array.indexOf(valueToReplace), 1, newValue);

Example 3: replace element in array typescript

const index: number = items.indexOf(element);

if (index !== -1) {
    items[index] = newElement;
}