阅读在Firefox / IE中工作的cookie,而不是Chrome

时间:2013-01-14 19:14:37

标签: javascript

我有一个代码可以在Firefox和IE中更改样式表并将其保存在Cookie中,但它在Chrome中不起作用。

这是我使用的代码:

<head>
<link href="default.css" title="default" rel="stylesheet" type="text/css" />
<link href="theme1.css" title="theme1" rel="stylesheet" type="text/css" />
<link href="theme2.css" title="theme2" rel="stylesheet" type="text/css" />
<link href="theme3.css" title="theme3" rel="stylesheet" type="text/css" />

<script type="text/javascript" src="javascript.js"></script>

</head>
<body>
<ul id="dropdown">
<li> Choose theme
    <ul> 
        <li id="stylesheet1" > <a href="#"> Default </a></li>
        <li id="stylesheet2" > <a href="#"> Theme 1 </a></li>
        <li id="stylesheet3" > <a href="#"> Theme 2 </a></li>
        <li id="stylesheet4" > <a href="#"> Theme 3 </a></li>
    </ul>
</li>
</ul> 


</body>

javascript.js包含:

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  } 
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}



window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}



var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


function initate()
{

document.getElementById("stylesheet1").onclick = function() {
   setActiveStyleSheet("default");
   return false
};
document.getElementById("stylesheet2").onclick = function() {
   setActiveStyleSheet("theme1");
   return false
};
document.getElementById("stylesheet3").onclick = function() {
   setActiveStyleSheet("theme2");
   return false
};
document.getElementById("stylesheet4").onclick = function() {
   setActiveStyleSheet("theme3");
   return false
}

}

window.onload = initate;

它可以在Chrome中更改样式表,但是当我重新加载页面时,它不像IE和Firefox那样保留所选的样式表。我无法理解为什么它在Chrome中不起作用。我是javascript的新手,我使用的大部分代码都不是由我编写的,而是来自不同的地方,所以我不太了解其中的大部分内容。

1 个答案:

答案 0 :(得分:0)

您正在覆盖以前的onclick处理程序,只执行第二个处理程序:

document.getElementById("stylesheet1").onclick = function() {
    createCookie(T1, style, 7);
};

...

var style1 = document.getElementById("stylesheet1");

style1.onclick = function () { 
  setActiveStyleSheet("default"); 
  return false;
};

要将关于使用jQuery的注释放到透视图中,整个initiate函数(目前大约50行)可以通过这种方式重写,大约7行:

$("li a").click(function () {
   # Turn our text ("Theme 1") into the name of the sheet ("theme1")
   var sheetName = $(this).text().toLowerCase().replace(/ /g, "");

   createCookie(T1, sheetName, 7)
   setActiveStyleSheet(sheetName); 
});