javascript inser into array code example
Example 1: javascript push in specific index
arr.splice(index, 0, item);
//explanation:
inserts "item" at the specified "index",
deleting 0 other items before it
Example 2: how to insert a value into an array javascript
var list = ["foo", "bar"];
list.push("baz");
["foo", "bar", "baz"] // result