javascript常用代码

以下是一些常用的JavaScript代码段：

1. 判断浏览器版本号

function browserVersion(types) {
  var other = 1;
  for (i in types) {
    var v = types[i] ? types[i] : i;
    if (USERAGENT.indexOf(v) != -1) {
      var re = new RegExp(v + '(\\/|\\s|:)([\\d\\.]+)', 'ig');
      var matches = re.exec(USERAGENT);
      var ver = matches != null ? matches[2] : 0;
      other = ver !== 0 && v != 'mozilla' ? 0 : other;
    } else {
      var ver = 0;
    }
    eval('BROWSER.' + i + '= ver');
  }
  BROWSER.other = other;
}

2. 获取URL参数

function getURLParameter(name) {
  var urlParams = new URLSearchParams(window.location.search);
  return urlParams.get(name);
}

3. 检测是否移动设备

function isMobileDevice() {
  return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
}

4. 获取当前时间

function getCurrentTime() {
  var now = new Date();
  var hours = now.getHours();
  var minutes = now.getMinutes();
  var seconds = now.getSeconds();
  return hours + ':' + minutes + ':' + seconds;
}