Page 106 - JavaScript

var array = [];
for(var people in object) {
array.push([people, object[people]]);
}

Now array is

[
["key1", 10],
["key2", 3],
["key3", 40],
["key4", 20]
]

Sorting multidimensional array

Given the following array

var array = [
["key1", 10],
["key2", 3],
["key3", 40],
["key4", 20]
];

You can sort it sort it by number(second index)

array.sort(function(a, b) {
return a[1] - b[1];
})

6

array.sort((a,b) => a[1] - b[1]);

This will output

[
["key2", 3],
["key1", 10],
["key4", 20],
["key3", 40]
]

Be aware that the sort method operates on the array in place. It changes the array. Most other
array methods return a new array, leaving the original one intact. This is especially important to
note if you use a functional programming style and expect functions to not have side-effects.

Removing items from an array

Shift

https://riptutorial.com/ 63