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2,205 PointsIf statement syntax inside arrow functions
When trying to find the solution on my own, I used the code below based on what's been taught in previous lessons but I get a console error that says "Uncaught SyntaxError: Unexpected end of input." in regards to the last line.
If I follow the solution and remove "else {" it suddenly works. Why is that? I thought those were needed for an if statement to work.
const randomNumber = (lower, upper) => {
if ( isNaN(lower) || isNaN(upper)) {
console.log( `Please enter a number. You input a string.` );
} else {
return Math.floor(Math.random() * (upper - lower + 1)) + lower;
};
// Call the function and pass it different values.
console.log( randomNumber( 5, 10) );
1 Answer
Steven Parker
231,184 PointsThe video solution uses a "throw" when an error is made instead of "console.log". The "throw" causes the function to end so no "else" is needed.
You need the "else" here because the function keeps running after logging.
pacificbee
2,205 Pointspacificbee
2,205 PointsI should've added this when I first posted my Q but that code is returning an error for the last line. The error is "Uncaught SyntaxError: Unexpected end of input."
Do you know why that is? I thought if statements needed "else {" in order to work.
Steven Parker
231,184 PointsSteven Parker
231,184 PointsAnd an "else" is entirely optional for the syntax (though sometimes it may be needed for the program logic to work).