鐵人賽 Day 23 - 站直、抬起頭 / 善待自己，就像善待任何你有責任幫助的人

站直、抬起頭

Stand up straight with your shoulders back

• 像隻龍蝦！ 永遠抬頭挺胸！
• 跟 Your body language may shape who you are 一樣！

善待自己，就像善待任何你有責任幫助的人

Treat yourself like someone you are responsible for helping

• 跟自己說言行一致，對所有人看所以事物都要用平常心來處理 ：）
• 和韓第爺爺說得一樣，你像樣怎麼被對待就怎麼樣對待別人。

碼農小園地

• 看用的是什麼 browser

  • Navigator
    • The Navigator interface represents the state and the identity of the user agent. It allows scripts to query it and to register themselves to carry on some activities.

function () {
    var ua = navigator.userAgent, tem,
      M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
    if (/trident/i.test(M[1])) {
      tem = /\brv[ :]+(\d+)/g.exec(ua) || [];
      return 'IE ' + (tem[1] || '');
    }
    if (M[1] === 'Chrome') {
      tem = ua.match(/\b(OPR|Edge?)\/(\d+)/);
      if (tem != null) return tem.slice(1).join(' ').replace('OPR', 'Opera').replace('Edg ', 'Edge ');
    }
    M = M[2] ? [M[1], M[2]] : [navigator.appName, navigator.appVersion, '-?'];
    if ((tem = ua.match(/version\/(\d+)/i)) != null) M.splice(1, 1, tem[1]);
    return M.join(' ');
  };

// this code snippet splits a string in a special notation

if (navigator.userAgent.indexOf("Chrome") !== -1) {
  // YES! The user is suspected to support look-behind regexps
  // DO NOT USE /(?<=[A-Z])/. It will cause a syntax error in
  //  browsers that do not support look-behind expressions
  //  because all browsers parse the entire script, including
  //  sections of the code that are never executed.
  var camelCaseExpression = new RegExp("(?<=[A-Z])");
  var splitUpString = function (str) {
    return ("" + str).split(camelCaseExpression);
  };
} else {
  /*This fallback code is much less performant, but works*/
  var splitUpString = function (str) {
    return str.replace(/[A-Z]/g, "z$1").split(/z(?=[A-Z])/g);
  };
}
console.log(splitUpString("fooBare")); // ["fooB", "are"]
console.log(splitUpString("jQWhy")); // ["jQ", "W", "hy"]

Reference

• 生存的 12 條法則： 法則 1, 2
• MDN- Navigator
• MDN - Browser detection using the user agent