95 lines
2.1 KiB
JavaScript
95 lines
2.1 KiB
JavaScript
function formatTime(time) {
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if (typeof time !== 'number' || time < 0) {
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return time;
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}
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const hour = parseInt(time / 3600, 10);
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time %= 3600;
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const minute = parseInt(time / 60, 10);
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time = parseInt(time % 60, 10);
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const second = time;
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return ([hour, minute, second]).map(n => {
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n = n.toString();
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return n[1] ? n : `0${n}`;
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}).join(':');
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}
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function formatLocation(longitude, latitude) {
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if (typeof longitude === 'string' && typeof latitude === 'string') {
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longitude = parseFloat(longitude);
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latitude = parseFloat(latitude);
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}
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longitude = longitude.toFixed(2);
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latitude = latitude.toFixed(2);
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return {
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longitude: longitude.toString().split('.'),
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latitude: latitude.toString().split('.'),
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};
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}
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function fib(n) {
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if (n < 1) return 0;
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if (n <= 2) return 1;
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return fib(n - 1) + fib(n - 2);
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}
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function formatLeadingZeroNumber(n, digitNum = 2) {
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n = n.toString();
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const needNum = Math.max(digitNum - n.length, 0);
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return new Array(needNum).fill(0).join('') + n;
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}
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function formatDateTime(date, withMs = false) {
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const year = date.getFullYear();
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const month = date.getMonth() + 1;
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const day = date.getDate();
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const hour = date.getHours();
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const minute = date.getMinutes();
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const second = date.getSeconds();
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const ms = date.getMilliseconds();
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let ret = `${[year, month, day].map(value => formatLeadingZeroNumber(value, 2)).join('-')
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} ${[hour, minute, second].map(value => formatLeadingZeroNumber(value, 2)).join(':')}`;
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if (withMs) {
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ret += `.${formatLeadingZeroNumber(ms, 3)}`;
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}
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return ret;
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}
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function compareVersion(v1, v2) {
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v1 = v1.split('.');
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v2 = v2.split('.');
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const len = Math.max(v1.length, v2.length);
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while (v1.length < len) {
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v1.push('0');
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}
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while (v2.length < len) {
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v2.push('0');
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}
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for (let i = 0; i < len; i++) {
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const num1 = parseInt(v1[i], 10);
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const num2 = parseInt(v2[i], 10);
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if (num1 > num2) {
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return 1;
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} if (num1 < num2) {
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return -1;
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}
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}
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return 0;
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}
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module.exports = {
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formatTime,
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formatLocation,
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fib,
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formatDateTime,
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compareVersion,
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};
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