我有一个导航栏,它具有指向页面的链接,我想在单击此单击时保存当前的导航活动,因为我在其他页面中有相同的菜单。
<ul>
<li id="nav1" class="navigation-item"><a href="#" >Nav 1</a></li>
<li class="navigation-item"><a href="#" >Nav 2</a></li>
<li class="navigation-item"><a href="#" >Nav 2</a></li>
<li class="navigation-item"><a href="#" >Nav 2</a></li>
</ul>
我尝试从$(this)
获取,然后在重新加载页面后使用以添加active类。
$(document).ready(function () {
$('.navigation-item').on('click', function (e) {
var current = $( this );
console.log(current);
console.log(JSON.stringify(current));
localStorage.setItem('activeTab', current);
});
var activeTab = localStorage.getItem('activeTab');
if (activeTab) {
// activeTab.addClass('active');
// $('#nav1').parent().addClass('active');
console.log(activeTab);
$( "ul li:nth-child(2)" ).append( "<span> - 2nd!</span>" );
}
});
jsfiddle
最好的问候。
您需要存储元素的索引:
$('.navigation-item').on('click', function (e) {
var current = $(this );
console.log(current);
console.log(JSON.stringify(current));
localStorage.setItem('activeTab', $('.navigation-item').index(current));
});
然后,使用索引恢复元素:
var activeTab = localStorage.getItem('activeTab');
if (activeTab) {
activeTabEL = $('.navigation-item').eq(parseInt(activeTab));
activeTabEL.addClass('active');
// $('#nav1').parent().addClass('active');
console.log(activeTabEL);
$( "ul li.navigation-item" ).eq(parseInt(activeTab)).append( "<span> - 2nd!</span>" );
}
示例:https://jsfiddle.net/xmzb7hdk/7/
您不需要太多JavaScript。您可以使用HTML5自定义属性来识别NAV(data-nav-item
)中的每个元素:
<ul>
<li data-nav-item="nav-1" id="nav1" class="navigation-item"><a href="#" >Nav 1</a></li>
<li data-nav-item="nav-2" class="navigation-item"><a href="#" >Nav 2</a></li>
<li data-nav-item="nav-3" class="navigation-item"><a href="#" >Nav 2</a></li>
<li data-nav-item="nav-4" class="navigation-item"><a href="#" >Nav 2</a></li>
</ul>
那么,这只是一个简单的3行JavaScript来设置值:
$(document).on("click", "[data-nav-item]", function(event) {
localStorage.setItem("activeTab", this.getAttribute("data-nav-item"));
});
之后,您可以使用:
识别活动导航var activeTab = $("[data-nav-item='" + localStorage.getItem("activeTab") + "']")
您可以存储id
而不是存储整个对象。它简化了检索的用途。
小提琴
html:
<ul>
<li id="nav1" class="navigation-item"><a href="#" >Nav 1</a></li>
<li id="nav2" class="navigation-item"><a href="#" >Nav 2</a></li>
<li id="nav3" class="navigation-item"><a href="#" >Nav 3</a></li>
<li id="nav4" class="navigation-item"><a href="#" >Nav 4</a></li>
</ul>
脚本:
$(document).ready(function () {
$('.navigation-item').on('click', function (e) {
var currentID = $(this).attr("id");
console.log(currentID+" = stored to localStorage");
localStorage.setItem('activeTab', currentID);
});
var activeTab = localStorage.getItem('activeTab');
if (activeTab!="") {
console.log(activeTab+" = retrieved form localStorage");
$("#"+activeTab ).append( "<span> - active!</span>" );
$("#"+activeTab ).addClass('active');
}
});