用jQuery导航隐藏菜单

Question

I build a nav menu with jquery, when I clicked on menu icon it will open but when I clicked again on menu icon it will not close

this is html code:

<aside class="aside_menu">
        <span class="arrow"></span>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
        <div><a href="#">test</a></div>
</aside>

this is jquery code:

$(document).ready(function () {
$(".aside_menu .arrow").click(function () {
    var aside_menu = $(this).parent();
    if (aside_menu.offset().right === 0)
        aside_menu.animate({right: "-200px"})
    else
        aside_menu.animate({right: "0px"})
})

})

the menu hide in the right side of page and only menu icon show up

sorry for bad language

Answer 1

.offset() returns an object containing the properties top and left , so your code will never work because aside_menu.offset().right is always undefined. See http://api.jquery.com/offset/

You have to use aside_menu.offset().left and then find the proper values to use in the if condition according to your page layout.

Answer 2

Simple things after the biggest resistance line, instead of jQuery, it's better to use JS for such simple things. In addition, animations in JS are clumsy, especially on weaker com-puter and smartphones, which destroys user experience. It's much easier to do it with simple JS and CSS. Probably my code will not help you, but I hope to guide you on the right path. Ps. Try not to use: "_" (underline) in classes and attributes and id's, because it is in terms of SEO, it is a shot in the knee, a better alternative is: "-" (dash).

 var menu = document.querySelector("#menu"); var button = document.querySelector("#button"); function toggleMenu(){ if(!menu.classList.contains("fade")){ menu.classList.add("fade"); }else{ menu.classList.remove("fade"); } } button.addEventListener("click", toggleMenu); 

 body{ margin: 0; display: flex; } #menu{ background: pink; width: 70px; height: 100%; text-align: center; transition: 0.34s; } #button{ height: 30px; transition: 0.34s; } .fade{ width: 0 !important; } .fade *{ display: none; } 

 <aside id="menu" class="fade"> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> <div><a href="#">test</a></div> </aside> <button id="button"> Button </button>