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Message
TypeError: invalid Array.prototype.sort argument (Firefox)
Error type
What went wrong?
The argument of Array.prototype.sort()
is expected to be either undefined
or a function which compares its operands.
Examples
Invalid cases
[1, 3, 2].sort(5); // TypeError var cmp = { asc: (x, y) => x >= y, dsc : (x, y) => x <= y }; [1, 3, 2].sort(cmp[this.key] || 'asc'); // TypeError
Valid cases
[1, 3, 2].sort(); // [1, 2, 3] var cmp = { asc: (x, y) => x >= y, dsc : (x, y) => x <= y }; [1, 3, 2].sort(cmp[this.key || 'asc']); // [1, 2, 3]