在 Javascript 中使用换行符的问题

Question

I'm trying to write a function which will return a rectangle of *'s. It keeps throwing up an error whenever I try to use \\n. I assume i'm using it incorrectly but don't know how - can anyone help?

function makeRectangle(m, n) {
    return '*'.repeat(m) \n.repeat(n);
}

Answer 1

You must concat \\n using + operator before next repeat

 function makeRectangle(m, n) { return ("*".repeat(m) + "\\n").repeat(n) } console.log(makeRectangle(3, 4))

Answer 2

The newline needs to be enclosed as a string:

function makeRectangle(m, n) {
    return ('*'.repeat(m) + '\n').repeat(n);
}

or just for fun, a string literal version, to eliminate the '\\n' entirely.

function makeRectangle(m, n) {
    return `${`${'*'.repeat(m)}
`.repeat(n)}`;
}

console.log(makeRectangle(5, 6))