mobile 01 方向鍵換頁

m01_changePageByArrow.js

/*

請搭配以下環境參數和 Personalized Web 參數使用
環境: chrome，搭配 extension "Personalized Web" ( https://chrome.google.com/webstore/detail/personalized-web/plcnnpdmhobdfbponjpedobekiogmbco )
Personalized Web 設定
  Match URLs: ^http://www.mobile01.com/topicdetail.php.*
  Add JavaScript: 加入以下內容
*/


function detectspecialkeys(e){
  var evtobj=window.event? event : e;
  var code = e.keyCode;
  if (e.charCode && code == 0)
    code = evtobj.charCode;
  switch(code) {
    case 37:
    var _href = window.location.href;
    if(_href.lastIndexOf('p=') >=0){
      var _count = _href.substring(_href.lastIndexOf('=')+1,_href.length);
      if(parseInt(_count) >=2){
        var _newCount = parseInt(_count)-1;
        var _new= _href.substring(0,_href.lastIndexOf('=')+1) + _newCount;
        console.log(_new);
        window.location.href=_new;
      }
    }
    break;
    case 39:
    var _href = window.location.href;
    if(_href.lastIndexOf('p=') >=0){
      var _count = _href.substring(_href.lastIndexOf('=')+1,_href.length);
      var _newCount = parseInt(_count)+1;
      var _new= _href.substring(0,_href.lastIndexOf('=')+1) + _newCount;
    } else
      var _new= _href+'&p=2';
    window.location.href=_new;
    break;
  }
}
window.onkeydown=detectspecialkeys;