另一个功能是点击另一侧边导航,设置scrollTop 页面就滚动到内容锚点。
问题是 当我点击侧导航,就触发了滚轮滚动的scroll()事件。怎么才能不触发。
就是说scroll事件只针对滚轮有效,对于设置scrollTop不触发
2 个解决方案
#1
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
div{
width:100px;
height:1000px;
background-color:#F00;
}
</style>
</head>
<body>
<input type="button" onclick="xx()">
<div></div>
<script type="text/javascript">
window.onscroll=function(){
console.log('a');
}
function xx(){
var d=window.onscroll;
window.onscroll=null;
document.body.scrollTop=100;
document.documentElement&&(document.documentElement.scrollTop=100);
window.setTimeout(function(){
window.onscroll=d;
},100);
}
</script>
</body>
</html>
先移除事件再绑定试试
#2
思路是不错的,下边是我用jquery写的大概,有效果
$(function(){
var G = {
scrollEventFun: function(){
var sh = $(window).scrollTop();
if(sh >= 102) {
var fh = $('.fix-header');
fh.fadeIn('slow');
$('nav').css({'position':'fixed', 'top':fh.height()});
}
else {
$('.fix-header').fadeOut('slow');
var hh = $('header').height();
$('nav').css({'position':'absolute', 'top':hh});
}
},
liClickEventFun: function(){
$(window).unbind('scroll');
$('nav ul li').removeClass();
$(this).addClass('active');
var href = $(this).data('anchor');
$('html').stop().animate({scrollTop: $("."+href).offset().top-58}, 1000, function(){$(window).bind('scroll', G.scrollEventFun);});
}
};
$(window).bind('scroll', G.scrollEventFun);
$('nav ul').delegate('li', 'click', G.liClickEventFun);
});
$(function(){
var G = {
scrollEventFun: function(){
var sh = $(window).scrollTop();
if(sh >= 102) {
var fh = $('.fix-header');
fh.fadeIn('slow');
$('nav').css({'position':'fixed', 'top':fh.height()});
}
else {
$('.fix-header').fadeOut('slow');
var hh = $('header').height();
$('nav').css({'position':'absolute', 'top':hh});
}
},
liClickEventFun: function(){
$(window).unbind('scroll');
$('nav ul li').removeClass();
$(this).addClass('active');
var href = $(this).data('anchor');
$('html').stop().animate({scrollTop: $("."+href).offset().top-58}, 1000, function(){$(window).bind('scroll', G.scrollEventFun);});
}
};
$(window).bind('scroll', G.scrollEventFun);
$('nav ul').delegate('li', 'click', G.liClickEventFun);
});
#1
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
div{
width:100px;
height:1000px;
background-color:#F00;
}
</style>
</head>
<body>
<input type="button" onclick="xx()">
<div></div>
<script type="text/javascript">
window.onscroll=function(){
console.log('a');
}
function xx(){
var d=window.onscroll;
window.onscroll=null;
document.body.scrollTop=100;
document.documentElement&&(document.documentElement.scrollTop=100);
window.setTimeout(function(){
window.onscroll=d;
},100);
}
</script>
</body>
</html>
先移除事件再绑定试试
#2
思路是不错的,下边是我用jquery写的大概,有效果
$(function(){
var G = {
scrollEventFun: function(){
var sh = $(window).scrollTop();
if(sh >= 102) {
var fh = $('.fix-header');
fh.fadeIn('slow');
$('nav').css({'position':'fixed', 'top':fh.height()});
}
else {
$('.fix-header').fadeOut('slow');
var hh = $('header').height();
$('nav').css({'position':'absolute', 'top':hh});
}
},
liClickEventFun: function(){
$(window).unbind('scroll');
$('nav ul li').removeClass();
$(this).addClass('active');
var href = $(this).data('anchor');
$('html').stop().animate({scrollTop: $("."+href).offset().top-58}, 1000, function(){$(window).bind('scroll', G.scrollEventFun);});
}
};
$(window).bind('scroll', G.scrollEventFun);
$('nav ul').delegate('li', 'click', G.liClickEventFun);
});
$(function(){
var G = {
scrollEventFun: function(){
var sh = $(window).scrollTop();
if(sh >= 102) {
var fh = $('.fix-header');
fh.fadeIn('slow');
$('nav').css({'position':'fixed', 'top':fh.height()});
}
else {
$('.fix-header').fadeOut('slow');
var hh = $('header').height();
$('nav').css({'position':'absolute', 'top':hh});
}
},
liClickEventFun: function(){
$(window).unbind('scroll');
$('nav ul li').removeClass();
$(this).addClass('active');
var href = $(this).data('anchor');
$('html').stop().animate({scrollTop: $("."+href).offset().top-58}, 1000, function(){$(window).bind('scroll', G.scrollEventFun);});
}
};
$(window).bind('scroll', G.scrollEventFun);
$('nav ul').delegate('li', 'click', G.liClickEventFun);
});