Page 103 - JavaScript

});
// Result: false

[false, true].every(function(value) {
return value;
});
// Result: false

[true, true].every(function(value) {
return value;
});
// Result: true

Concatenating Arrays

Two Arrays

var array1 = [1, 2];
var array2 = [3, 4, 5];

3

var array3 = array1.concat(array2); // returns a new array

6

var array3 = [...array1, ...array2]

Results in a new Array:

[1, 2, 3, 4, 5]

Multiple Arrays

var array1 = ["a", "b"],
array2 = ["c", "d"],
array3 = ["e", "f"],
array4 = ["g", "h"];

3

Provide more Array arguments to array.concat()

var arrConc = array1.concat(array2, array3, array4);

6

Provide more arguments to []

var arrConc = [...array1, ...array2, ...array3, ...array4]

https://riptutorial.com/ 60