如何在获取用户输入时阻止发生无限循环？

Question

I'm a newbie writing a program that continues to ask the user for a number until the entered number is less than or equal to 100. I keep ending up in an infinite loop and I'm unsure of how to add the correct conditions to end the loop.

let num;

while (!(num === 100 && num < 99)) {     // infinite loop
    num = Number(prompt("Enter a number: "));
    console.log(num);
}

I want to exit the loop when the user enters a number less than or equal to 100.

Answer 1

 let num = 101; while (num > 100) { num = Number(prompt("Enter a number: ")); console.log(num); } 

Or with Do/While:

 let num; do { num = Number(prompt("Enter a number: ")); console.log(num); } while (num > 100); 

Answer 2

 let num; while (true) { num = Number(prompt("Enter a number: ")); if (num <= 100) { break; } } 

Answer 3

To resolve this issue use either

!(num === 100 || num < 100)  or
!(num <= 100)

Issue: Num can never be both equal to 100 and less than 99 , so it will be false always and so while condition is true always

 let num; while (!(num <= 100)) { //or !(num === 100 || num < 100) num = Number(prompt("Enter a number: ")); console.log(num); }