Node.js examples for String:Format
Format seconds as a time string, H:MM:SS or M:SS
/**//from www . j ava 2 s . c o m * @file format-time.js * * Format seconds as a time string, H:MM:SS or M:SS * Supplying a guide (in seconds) will force a number of leading zeros * to cover the length of the guide * * @param {Number} seconds Number of seconds to be turned into a string * @param {Number} guide Number (in seconds) to model the string after * @return {String} Time formatted as H:MM:SS or M:SS * @private * @function formatTime */ function formatTime(seconds, guide=seconds) { seconds = seconds < 0 ? 0 : seconds; let s = Math.floor(seconds % 60); let m = Math.floor(seconds / 60 % 60); let h = Math.floor(seconds / 3600); const gm = Math.floor(guide / 60 % 60); const gh = Math.floor(guide / 3600); // handle invalid times if (isNaN(seconds) || seconds === Infinity) { // '-' is false for all relational operators (e.g. <, >=) so this setting // will add the minimum number of fields specified by the guide h = m = s = '-'; } // Check if we need to show hours h = (h > 0 || gh > 0) ? h + ':' : ''; // If hours are showing, we may need to add a leading zero. // Always show at least one digit of minutes. m = (((h || gm >= 10) && m < 10) ? '0' + m : m) + ':'; // Check if leading zero is need for seconds s = (s < 10) ? '0' + s : s; return h + m + s; } export default formatTime;