Question

我不想在页面加载后更改课程。如何在我的项目中添加类cookie。

HTML 红色绿色

<div class="red">Testing Text1</div>
<div class="red">Testing Text2</div>

CSS

.red{
    color: red;
    font-weight: bold;
}
.green {
    color: green;
    font-weight: bold;
}`

的Javascript

  function changeClass(value) {
     var color1 = 'red';
     var color2 = 'green';
     if (value == 2) {
         color1 = 'green';
         color2 = 'red';
     };

     var elems = document.getElementsByClassName(color1);
     var i = elems.length;
     while (i--) {
         var item = elems[i];
         if (hasClass(item, color1)) {
             removeClass(item, color1);
             addClass(item, color2);
         }
     };
     return false;
 };

 function hasClass(ele, cls) {
     return ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'));
 }

 function addClass(ele, cls) {
     if (!hasClass(ele, cls)) ele.className += " " + cls;
 }

 function removeClass(ele, cls) {
     if (hasClass(ele, cls)) {
         var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
         ele.className = ele.className.replace(reg, ' ');
     }
 }

Answer 1

用于在JS中添加Cookie

 function setCookie(cname, cvalue, exdays) 
  {
    var d = new Date();
    d.setTime(d.getTime() + (exdays*24*60*60*1000));
    var expires = "expires="+d.toUTCString();
    document.cookie = cname + "=" + cvalue + "; " + expires;
  }

在jS中获取Cookie

function getCookie(cname) 
{
    var name = cname + "=";
    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);
    if (c.indexOf(name) != -1) return c.substring(name.length,c.length);
 }
  return "";
}

现在，您可以在代码中的任何位置使用此功能并调用它。

如何通过javascript添加类cookie？

1 个答案: