javascript标签没有激活第一个标签

Question

我正在使用带有javascript的简单标签。目前设置了javascript如果location.hash与其中一个链接匹配，请将其用作活动选项卡。如果未找到匹配项，请使用第一个链接作为初始活动选项卡。我想要的是在单击选项卡之前将所有选项卡内容设置为none。

$('ul.tabs').each(function(){
// For each set of tabs, we want to keep track of
// which tab is active and it's associated content
var $active, $content, $links = $(this).find('a');

// If the location.hash matches one of the links, use that as the active tab.
// If no match is found, use the first link as the initial active tab.
$active = $($links.filter('[href="'+location.hash+'"]')[0] || $links[0]);
$active.addClass('active');

$content = $($active[0].hash);

// Hide the remaining content
$links.not($active).each(function () {
  $(this.hash).hide();
});

// Bind the click event handler
$(this).on('click', 'a', function(e){
  // Make the old tab inactive.
  $active.removeClass('active');
  $content.hide();

  // Update the variables with the new link and content
  $active = $(this);
  $content = $(this.hash);

  // Make the tab active.
  $active.addClass('active');
  $content.show();

  // Prevent the anchor's default click action
  e.preventDefault();
});
 });