javascript javascript的一些帮助：如broswer检测或协议检测，并打开一个弹出窗口。

Posted 2021-05-04

function params(name) {
  //return the value of params on url
  // example: https://www.google.com/?name=klevis&id=456
  // params('name') return 'klevis'
  return (location.search.split(name + '=')[1] || '').split('&')[0];
}
function generate_iframe(parent_id,name,url,classstyle,clerar=false){
  //generate a iframe from javascript or clear it
  /*exmaple: generate_iframe(
                              'content_iframe',
                              'iframe_name'
                              'https://www.google.com',
                              'iframeclass',
                              false,
  )*/
  if(clear==true){
    document.querySelector("#"+parent_id).innerHTML = '';
  }else{
    document.querySelector("#"+parent_id).innerHTML += '<iframe id="'+name+'" name="'+name+'" src="'+url+'"  class="'+classstyle+'"></iframe>';
  }
}

function isBroswer(name){
  // dettect id is the current broswer
  if(!name) return 'empty';
  switch(name){
    case 'chrome':
      // Chrome 1+
      return !!window.chrome && !!window.chrome.webstore;
    break;
    case 'firefox':
      // Firefox 1.0+
      return typeof InstallTrigger !== 'undefined';
    break;
    case 'ie':
      var isIE = /*@cc_on!@*/false || !!document.documentMode;
      return isIE;
    break;
    case 'edge':
      // Internet Explorer 6-11
      var isIE = /*@cc_on!@*/false || !!document.documentMode;
      // Edge 20+
      return !isIE && !!window.StyleMedia;
    break;
    case 'blink':
      // Blink engine detection
      return  (isChrome || isOpera) && !!window.CSS
    break;
    case 'opera':
    //Opera
      return (!!window.opr && !!opr.addons) || !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
    break;
    case 'safari':
      // Safari 3.0+ "[object HTMLElementConstructor]" 
      var isSafari = /constructor/i.test(window.HTMLElement) || (function (p) { return p.toString() === "[object SafariRemoteNotification]"; })(!window['safari'] || (typeof safari !== 'undefined' && safari.pushNotification));
      return isSafari;
    break;
    default:
      return null;
    break;
  }
}
//isBroswer('chrome') return true/false

function popUpWindow(mypage, w, h, pos, myname, infocus){
    //open a pop up window
    if (w!=parseInt(w)||w<=0) w=$width;
    if (h!=parseInt(h)||h<=0) h=$height;
    if (myname==null){myname="swin"};
    var myleft = 0;
    var mytop = 0;
    if (myleft==0 && mytop==0 && pos!="random"){pos="center"};
    if (pos=="random"){myleft=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;mytop=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
    if (pos=="center"){myleft=(screen.width)?(screen.width-w)/2:100;mytop=(screen.height)?(screen.height-h)/2:100;}
    settings="width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=no,location=yes,directories=no,status=no,menubar=no,toolbar=no,resizable=no";swin=window.open(mypage,myname,settings);
    if (infocus==null || infocus=="front"){swin.focus()};
    return false;
}
//popUpWindow(url, 400, 400, 'center', 'Name Of Window', 'front');


function protocol(partname){
  // return true or false the current page protocol 
  if(partname) partname = partname+':';
  if( window.location.protocol == partname ){
    return true
  }else return false
}
//protocol('file|http|https') return true | false