Question

抱歉下面的丑陋布局示例...... http://www.wthdesign.net/test/test2.html

我设法将我的ID名称附加到网址：

function generateUrl(el)
{
    var currentId = $(el).attr('id');
    document.location.hash = currentId;
}

并添加：

<a id="abc2" onClick="generateUrl(this)" >this is an anchor btn</a>

但最终会产生与以下相同的效果：

<a id="abc2" href="#abc2" >this is an anchor btn</a>

一切都很好，但是当我点击链接时我只是不想滚动它我该怎么办？非常感谢提前。

Answer 1

如果不需要ID，只需href="#some-value即可更改窗口位置而无需滚动页面。如果确实需要文档中的id（在本例中为a标签），则位置更改将导致滚动。您可以通过在现代浏览器中使用history对象或在链接点击上存储滚动位置，然后使用hashchange事件重置它来解决此问题。

我会将这个标记用于两种解决方案：

示例加价：

<div class="filler"></div>
<a id="abc1" href="#abc1" class="my-class">this is an anchor btn</a>
<div class="filler"></div>
<a id="abc2" href="#abc2" class="my-class">this is an anchor btn</a>
<div class="filler"></div>
<a id="abc3" href="#abc3" class="my-class">this is an anchor btn</a>
<div class="filler"></div>

history.replaceState或history.pushState

<强> Live demo (click).

//get element referneces
var elems = document.getElementsByClassName('my-class');

//iterate over the references
for (var i=0; i<elems.length; ++i) {
  //add click function to each element
  elems[i].addEventListener('click', clickFunc);
}

//this will store the scroll position
var keepScroll = false;

//fires when a ".my-class" link is clicked
function clickFunc(e) {
  //prevent default behavior of the link
  e.preventDefault();
  //add hash
  history.replaceState({}, '', e.target.href);
}

scrollTop和hashchange事件

Live demo (click).

<强> JavaScript的：

//get element referneces
var elems = document.getElementsByClassName('my-class');

//iterate over the references
for (var i=0; i<elems.length; ++i) {
  //add click function to each element
  elems[i].addEventListener('click', clickFunc);
}

//this will store the scroll position
var keepScroll = false;

//fires when a ".my-class" link is clicked
function clickFunc(e) {
  //if the location hash is already set to this link
  if (window.location.hash === '#'+e.target.id) {
    //do nothing
    e.preventDefault(); 
  }
  else {
    //the location will change - so store the scroll position
    keepScroll = document.body.scrollTop;
  }
}

window.addEventListener('hashchange', function(e) {
  //the location has has changed

  //if "keepScroll has been set
  if (keepScroll !== false) {
    //move scroll position to stored position
    document.body.scrollTop = keepScroll;
    //set "keepScroll" to false so that this behavior won't affect irrelevant links
    keepScroll = false;
  }
});

Answer 2

我遇到的问题是，我使用平滑滚动行为，并且在单击锚链接时，Firefox 滚动位置会四处跳跃。所以这里堆栈溢出没有任何效果。如果有人对我最近的方法感兴趣：

在滚动监听器中存储当前滚动位置
创建一个 hashchange 监听器
通过向 body 添加 css 来防止滚动，利用 window.scroll 功能并立即从 body 中删除 css 以启用滚动

这是一个例子：

document.addEventListener('DOMContentLoaded', () => {

  // store scroll position
  let scrollTop = document.documentElement.scrollTop
  window.addEventListener('scroll', () => scrollTop = document.documentElement.scrollTop)

  window.addEventListener('hashchange', () => {
    // disable scrolling
    document.body.style.overflow = 'hidden'

    // set current scroll position
    window.scroll(0, scrollTop)

    // enable scrolling
    setTimeout(() => {
      document.body.style.overflow = 'auto'
    }, 10)
  }, false)

  // trigger hashchange event on page load
  window.dispatchEvent(new Event('hashchange'))
})

防止滚动更改哈希值

2 个答案:

history.replaceState或history.pushState

scrollTop和hashchange事件