init

xhs-mini-demos/util/util.js

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