Given an array of numbers, sort the numbers ascending (1,2,3...) and return the sorted array.

In fact, returning any negative value will have the same effect as returning -1 here. Any positive value will do the same as 1. This means we can shorten this function significantly:

[3,2,4,1].sort(function comparison(a,b) {
    return a - b;
});
Here, if a is less than b, the result of the subtraction will be negative (placing a first). If b is less than a the result will positive (placing b first).

Sorting Descending
In the previous example, we sorted our array ascending:

[3,2,4,1].sort(function comparison(a,b) {
    return a - b;
});
A negative result moves a in front of b. A positive result moves b in front of a. Zero keeps the order unchanged.

Sorting descending will be the opposite. We want a negative result to move b in front of a and a positive result to move a in front of b.

 Your Goal: Sort Numbers Descending
Given an array of numbers sort them in descending order and return the array.

Comparing Strings
Strings have a built-in method for convienent comparison called localeCompare.

'a'.localeCompare('a'); // 0
'a'.localeCompare('b'); // -1
"apple".localeCompare("abcd"); // 1
 The localeCompare method also gives options for things like case, accent sensitivity and language. To learn more see the full documentation.

Conveniently, localeCompare returns the numerical values we need to help sort our strings! As shown above, when a string is compared to one that would come after it, the result is -1. When compared to a string that should precede it, the result is 1.

 Your Goal: Sort Strings Ascending
Given an array of strings, sort them in ascending order ('a','b','c'...) and return the sorted array.

 For debugging purposes, the tests will log your actual results versus the expected test results.

Comparing Strings
Strings have a built-in method for convienent comparison called localeCompare.

'a'.localeCompare('a'); // 0
'a'.localeCompare('b'); // -1
"apple".localeCompare("abcd"); // 1
 The localeCompare method also gives options for things like case, accent sensitivity and language. To learn more see the full documentation.

Conveniently, localeCompare returns the numerical values we need to help sort our strings! As shown above, when a string is compared to one that would come after it, the result is -1. When compared to a string that should precede it, the result is 1.

 Your Goal: Sort Strings Ascending
Given an array of strings, sort them in ascending order ('a','b','c'...) and return the sorted array.

 For debugging purposes, the tests will log your actual results versus the expected test results.

Sorting by Multiple Properties
When it comes to objects, we can sort by their properties.

Let's consider some students:

const students = [
    { id: 1, graduated: true, grade: 86 },
    { id: 2, graduated: false, grade: 96 },
    { id: 3, graduated: false, grade: 78 },
    { id: 4, graduated: true, grade: 96 },
];
Let's sort this list by two rules in the following priority:

Students who Graduated
Highest Grades
const students = [
    { id: 4, graduated: true, grade: 96 },
    { id: 1, graduated: true, grade: 86 },
    { id: 2, graduated: false, grade: 96 },
    { id: 3, graduated: false, grade: 78 },
];
 Now the list shows the graduated students at the top and then it sorts those groups by the highest grades.

 To compare students, this can be broken up into three scenarios.

 Your Goal: Sort Students
Given an array of students, sort first by graduated then by grade like in the example above.

Each object in the students array will have properties id, graduated and grade just like in the example shown above.

 For debugging purposes, the tests will log your actual results versus the expected test results.