JavaScript null mathematischer Boden
console.log(Math.floor(null)); // 0
console.log(Math.floor(undefined)); // NaN
Mysterious Monkey
console.log(Math.floor(null)); // 0
console.log(Math.floor(undefined)); // NaN Math.floor(x);console.log(Math.floor(5.95));
// expected output: 5
console.log(Math.floor(5.05));
// expected output: 5
console.log(Math.floor(5));
// expected output: 5
console.log(Math.floor(-5.05));
// expected output: -6// There are many ways of rounding...
Math.ceil(5.5) // Answer 6, rounds up.
Math.round(5.5) // Answer 6, rounds to the closest whole number.
Math.floor(5.5) // Answer 5, rounds down.
// ceil is short for ceiling(up), floor is down...// Will round innerHTML value to 2
document.getElementById("myId").innerHTML = Math.floor(2.9);Math.floor(1.6);
result: 1