JavaScript 日期和浏览器版本函数

Question

我似乎无法让这段代码工作。我试图做到这一点，如果浏览器是 IE6 或更低版本，它将使用“horarios2.png”作为 img src，而不是其他。如果是任何其他浏览器，它将检查工作日(0-6)，以便填写每天的特定图像。从星期一(1)到星期三(3)，图像应该是“quarta.png”。前几天有自己的形象。它们是分开工作的，但是当我尝试将它们放在一起时，我遇到了麻烦，并且它无法渲染图像。

脚本

$(document).ready (function horario () {
var date = new Date();
var weekday = (date.getDay());

function (msieversion) {
var ua = window.navigator.userAgent
var msie = ua.indexOf ( "MSIE " )

if ( msie > 0 )
     return parseInt (ua.substring (msie+5, ua.indexOf (".", msie )))
else
     return 0
}
if ((msieversion() == 0 )&&(weekday==0)) {
    document.getElementById('horarios').src = "img/domingo.png";}
else if ((msieversion() == 0 )&&(weekday==4)) {
    document.getElementById('horarios').src = "img/quinta.png";}
else if ((msieversion() == 0 )&&(weekday==5)) {
    document.getElementById('horarios').src = "img/sexta.png";}
else if ((msieversion() == 0 )&&(weekday==6)) {
    document.getElementById('horarios').src = "img/sabado.png";}
else if((msieversion() <= 6 )&&(weekday>=0)) {
    document.getElementById('horarios').src = "img/horarios2.png";}
else {
    document.getElementById('horarios').src = "img/quarta.png";}
});

HTML

<img id="horarios" border="0" alt="" width="343" height="45" />

Answer 1

这就是我认为你的意思 DEMO HERE (mouseover the image)

function msieversion() {  
  var ua = window.navigator.userAgent
  var msie = ua.indexOf("MSIE ");
  return (msie == -1)?0: 
      parseInt(ua.substring (msie+5, ua.indexOf (".", msie )))
}
function getImg(idx) {
  return [
  "img/domingo.png",
  "img/quarta.png",
  "img/quarta.png",
  "img/quarta.png",
  "img/quinta.png",
  "img/sexta.png",
  "img/sabado.png"
  ][idx];
}
$(document).ready(function() {
  var weekday = new Date().getDay();
  if (msieversion() == 0 ) $("#horarios").attr("src",getImg(weekday));
  else $("#horarios").attr("src",(msieversion() <= 6 )? "img/horarios2.png":"img/quinta.png");
});