const arr = ["php", "c++", null, "typescript", "c", null, "nodejs", null, "javascript", "python"];
arr.sort((a, b) => {
if (a === null) {
return 1;
}
if (b === null) {
return -1;
}
if (a === b) {
return 0;
}
return a < b ? 1 : -1;
});
console.log(arr);
/*
run:
['typescript', 'python', 'php', 'nodejs', 'javascript', 'c++', 'c', null, null, null]
*/