传入散列路径URL的窗口滚动 [英] Window scroll for incoming hash path url

问题描述

我有一个包含一些固定和绝对元素的页面，导致散列路径链接出现问题。我可以在用户使用 function（）{window.scrollBy（0，-80）}; 浏览页面时修复它，但是如果我尝试调用此函数在我的文档准备好（滚动传入散列）它不起作用。

I have a page with some fixed and absolute elements that are causing an issue for hash path links. I was able to fix it while the user is navigating around the page with function() { window.scrollBy(0, -80) }; however if I try to call this on my document ready (to scroll for incoming hashes) it does not work.

我发现它不起作用的原因是，在文档准备好之后，页面并没有实际调整到哈希。如果我无法做到这一点在文档准备好，我什么时候可以做到这一点？

I found the reason it does not work is that the page does not actually adjust to the hash until after the document ready. If I cannot do this at document ready when can I do it?

推荐答案

您可以尝试如下所示：

You could try something like this:

<script type="text/javascript">
    $(function() {

        // Retrieves the hash from URL
        var hash = window.location.hash.substring(1);


        // If hash length > 0 (there is actually a hash)
        // And the #hash element exists on page
        if(hash.length > 0 && $('#'+ hash).size() > 0){

            // Binds a function to the page scroll
            $(document).on('scroll', function(){

                // Here's the bright part: when the browser finish loading the page, it will
                // scroll right to the #hash element. So, whenever the page is scrolled, if
                // the #hash element offset top matches the page scroll offset, it means the page
                // was scrolled right to that element.
                var elemTop = $('#'+ hash).offset().top; // Retrieve element's offset top
                var docTop = $(document).scrollTop(); // Retrieve page's offset

                if(elemTop == docTop){
                    alert('Now I do my stuff!! :)');
                    // Do your stuff
                }

                // And now you make sure "your stuff" won't happen again if the user
                // accidentally scrolls precisely to the #hash element's offset by
                // unbinding scroll action of the page.
                $(document).unbind('scroll');
            });
        }

    });
</script>

我希望能帮助您解决您的问题！让我知道是否有什么不清楚。

I hope that help you to solve your problem! Let me know if anything was unclear.

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