jQuery和onclick在这种情况下不起作用

Question

striving to make jquery and li working in this context:

<div id="statLateralMenu">
    <h3>Statistics</h3>

    <ul>
        <li id="id1" class="selected">Stat 1</li>
        <li id="id2">Stat 2</li>
    </ul>
</div>

s

$(function() {
    $("#statLateralMenu li").click(function()
    {
        alert( "A" );
        $("#statLateralMenu li").removeClass("selected");
        $(this).addClass("selected");
    });
}
);

I am pretty sure the error is very stupid also because I've already implemented this code in another area of my page and it works perfectly, but this time really I can't make it working. Any clue please?

EDIT:

I am not able even to fire the alert, my problem is not (yet) to change the class's li . JQuery is loaded as in the same page I have another ul/li complex and it works perfectly

EDIT 2: At this point maybe I am messing up a bit, but using my code here it doesn't work as well: https://jsfiddle.net/nakjyyaj/4/

Answer 1

It seems to work :

 $(function() { $("li").click(function() { $("li").removeClass("selected"); $(this).addClass("selected"); }); }); 

 .selected{background:yellow} 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <ul> <li>azerty</li> <li>bzerty</li> <li>czerty</li> </ul> 

To deal with dynamic content you can use event delegation :

 $(function() { $("ul").on("click", "li", function() { $("li").removeClass("selected"); $(this).addClass("selected"); }); }); setTimeout(function () { $("p").remove(); $("ul").html("" + "<li>azerty</li>" + "<li>bzerty</li>" + "<li>czerty</li>" ); }, 1000); 

 .selected{background:yellow} 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <p>Wait 1 second.</p> <ul></ul> 

Further reading : https://stackoverflow.com/a/46251110/1636522 .

Answer 2

try to change $("#statLateralMenu li").removeClass("selected"); to

$(this).removeClass("selected");

like that

$(function() {
    $("#statLateralMenu li").click(function()
    {
        alert( "A" );
        $(this).removeClass("selected");
        $(this).addClass("selected");
    });
}
);

but if you want only to change design elements you can use :hover

li:hover { 
    background-color: yellow;
}

Answer 3

In your JSFiddle, you forgot to load JQuery framework. You don't need script tag in JSFiddle (no need and ).