You can convert hours and minutes into seconds in JavaScript using a simple formula:seconds = (hours * 3600) + (minutes * 60);Example Code:

function convertToSeconds(hours, minutes) {return (hours * 3600) + (minutes * 60);}// Example usagelet hours = 2;let minutes = 30;let seconds = convertToSeconds(hours, minutes);console.log(`Total seconds: ${seconds}`); // Output: Total seconds: 9000

Explanation:1. Multiply the number of hours by `3600` (since 1 hour = 3600 seconds).2. Multiply the number of minutes by `60` (since 1 minute = 60 seconds).3. Add both values to get the total seconds.