常用js方法總結：

一諾淺淺發表於2018-10-20
JS

1. cookie的操作方法（原生js）

export const CookieUtil = {
    get: function (name) {
        var cookieName = encodeURIComponent(name) + '=',
            cookieStart = document.cookie.indexOf(cookieName),
            cookieValue = null;
        if (cookieStart > -1) {
            var cookieEnd = document.cookie.indexOf(';', cookieStart);
            if (cookieEnd == -1) {
                cookieEnd = document.cookie.length;
            }
            cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd));
        }
        return cookieValue
    },
    set: function (name, value, expires, path, domain, secure) {
        var cookieText = encodeURIComponent(name) + '=' + encodeURIComponent(value);
        if (expires instanceof Date) {
            cookieText += "; expires=" + expires.toGMTString();
        }
        if (path) {
            cookieText += "; path=" + path;
        }
        if (domain) {
            cookieText += "; domain=" + domain;
        }
        if (secure) {
            cookieText += "; secure";
        }
        document.cookie = cookieText;
    },
    unset: function (name, path, domain, secure) {
        this.set(name, "", new Date(0), path, domain, secure);
    }
}
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2.獲取地址上的引數

export const getUrlParam = () => {
  const url = window.location.search
  let theRequest = {}
  if (url.indexOf('?') !== -1) {
    const str = url.substr(1)
    const strs = str.split('&')
    for (let i = 0; i < strs.length; i++) {
      theRequest[strs[i].split('=')[0]] = unescape(strs[i].split('=')[1])
    }
  }
  return theRequest
}
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3.當前瀏覽器名稱

export const getExplorer = () => {
  const ua = window.navigator.userAgent
  const isExplorer = (exp) => {
    return ua.indexOf(exp) > -1
  }
  if (isExplorer('MSIE')) return 'IE'
  else if (isExplorer('Firefox')) return 'Firefox'
  else if (isExplorer('Chrome')) return 'Chrome'
  else if (isExplorer('Opera')) return 'Opera'
  else if (isExplorer('Safari')) return 'Safari'
}
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4.判斷是否是PC

const IsPC = () => {
    const userAgentInfo = navigator.userAgent;
    const Agents = ['Android', 'iPhone', 'SymbianOS', 'Windows Phone', 'iPad', 'iPod'];
    let flag = true;
    for (let v = 0; v < Agents.length; v++) {
        if (userAgentInfo.indexOf(Agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
};
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5.{token: 1111, userId: 111} 將引數拼接 token=111&userId=111

export const SortParams = data => {
  let param = ''
  for (let i in data) {
    if (param) {
      param += `&${i}=${data[i]}`
    } else {
      param += `${i}=${data[i]}`
    }
  }
  return param
}
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