停止特定链接上的javascript执行

时间:2015-05-26 11:23:23

标签: javascript jquery html

嘿那里:)我有脚本,当你点击锚点时添加fadeIn和fadeOut效果。

但它针对我的所有锚点。是否存在空白以避免从特定链接执行,例如我的"返回顶部"链接在页脚中。它会为该链接添加效果,并且不会停止,因为没有目标网址。

JS:

// Page transitions and preventing FOUC(flash of unstyled content).
jQuery.holdReady(true);
jQuery("body").css("opacity", 0);
jQuery.holdReady(false);
jQuery(function ($) {
    $("body").fadeTo(1500, 1);
    $(document).on("click", "a", function (event) {

        // get the href attribute
        // "this" is still the <a> element here
        var newUrl = $(this).attr("href");

        event.preventDefault();
        $("body").fadeTo(800, 0, function () {

            //here, where you were trying to get the url, "this"
            //points to the animated element, ie body


            // veryfy if the new url exists or is a hash
            if (!newUrl || newUrl[0] === "#") {
                // set that hash
                location.hash = newUrl;
                return;
            }

            //just update the location without fading in at this point
            location = newUrl;

            // prevent the default browser behavior.
            return false;
        });
    });
});

页面顶部的链接如下所示:

            <a class="to-top" href="#masthead">
                <svg class="skull-up">
                    <use xlink:href="#skull"></use>
                </svg>
                <span class="screen-reader-text">Tilbage til top</span>
            </a>

3 个答案:

答案 0 :(得分:2)

使用event.stopPropagation();

&#13;
&#13;
$(document).on("click", "a", function (event) {
  alert('Clicked on a');  
  return false;
});
$('.to-top').on('click', function(event){
  event.stopPropagation();
  alert('Clicked on a with class "to-top"');
});
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a href="#something">I am a tag</a>

<a class="to-top" href="#something">I am a tag to top</a>
&#13;
&#13;
&#13;

答案 1 :(得分:0)

你应该移动返回false;到click事件的回调函数...现在你调用return false;动画完成后并没有真正做任何事情!

$(document).on("click", "a", function (event) {

    // get the href attribute
    // "this" is still the <a> element here
    var newUrl = $(this).attr("href");

    event.preventDefault();
    $("body").fadeTo(800, 0, function () {

        //here, where you were trying to get the url, "this"
        //points to the animated element, ie body


        // veryfy if the new url exists or is a hash
        if (!newUrl || newUrl[0] === "#") {
            // set that hash
            location.hash = newUrl;
            return;
        }

        //just update the location without fading in at this point
        location = newUrl;

    });
    // prevent the default browser behavior.
    return false;
});

答案 2 :(得分:0)

另一种方法是仅在要执行的链接上添加CSS类。

$(document).on("click", "a.do-action", ...

它还可以更容易地查看哪些链接可以操作。

如果不应单击链接,则可能需要使用其他标记。