Question

我正在尝试在document.cookie中设置多个cookie，但遗憾的是我的代码将cookie值显示为null且未定义。我的代码如下：

<script>
function set_cookie ( name, value, exp_y, exp_m, exp_d, path, domain, secure )
{
  var cookie_string = name + "=" + escape ( value );

  if ( exp_y )
  {
    var expires = new Date ( exp_y, exp_m, exp_d );
    cookie_string += "; expires=" + expires.toGMTString();
  }

  if ( path )
        cookie_string += "; path=" + escape ( path );

  if ( domain )
        cookie_string += "; domain=" + escape ( domain );

  if ( secure )
        cookie_string += "; secure";

  document.cookie = cookie_string;
}
</script>
<script>

alert(setCookie( "username", "Miron" ));
alert(setCookie( "username", "Mirion", 2003, 01, 15 ));
alert(setCookie("username", "John Smith", 2003, 01, 15, "","elated.com", "secure"))
</script>

我在技术上看不到代码中的错误。请告诉我哪里出错了

Answer 1

您似乎试图调用setCookie，但您定义的方法称为set_cookie。如果在方法中添加dubugger行并运行它 - 您是否正在调试调试语句？要更正，请将功能名称更改为setCookie或将呼叫更改为set_cookie。

此外，该功能似乎没有返回任何内容，因此您的警报将为undefined（当它运行时）。在调用setCookie方法后，只需在控制台中尝试使用document.cookie，您就会看到已设置了值。

Answer 2

尝试return将字符串display in alert更改为set_cookie，并将您的函数名称setCookie更改为<script> function setCookie ( name, value, exp_y, exp_m, exp_d, path, domain, secure ) { var cookie_string = name + "=" + escape ( value ); if ( exp_y ) { var expires = new Date ( exp_y, exp_m, exp_d ); cookie_string += "; expires=" + expires.toGMTString(); } if ( path ) cookie_string += "; path=" + escape ( path ); if ( domain ) cookie_string += "; domain=" + escape ( domain ); if ( secure ) cookie_string += "; secure"; document.cookie = cookie_string; return cookie_string;//or document.cookie } </script> <script> alert(setCookie( "username", "Miron" )); alert(setCookie( "username", "Mirion", 2003, 01, 15 )); alert(setCookie("username", "John Smith", 2003, 01, 15, "","elated.com", "secure")) </script>。

{{1}}

在javascript中设置多个cookie

2 个答案: