Javascript scrollTop()返回元素下方的位置
当导航栏通过页面上的某些点时,我使用jquery高亮显示导航栏,但有一部分导航栏在通过对象下方之前不会高亮显示。特定的罪犯是页面的联系人部分 这是密码笔- 以下是相关的html-Javascript scrollTop()返回元素下方的位置,javascript,jquery,css,Javascript,Jquery,Css,当导航栏通过页面上的某些点时,我使用jquery高亮显示导航栏,但有一部分导航栏在通过对象下方之前不会高亮显示。特定的罪犯是页面的联系人部分 这是密码笔- 以下是相关的html- <hr id="contact-anchor" class="line section-seperator"> 和javascript- $(window).scroll(function() { var navHeight = $(".navbar").outerHeight(); var sc
<hr id="contact-anchor" class="line section-seperator">
和javascript-
$(window).scroll(function() {
var navHeight = $(".navbar").outerHeight();
var scrollTop = $(window).scrollTop();
var aboutPoint = $('#about').offset().top;
var lineMargin = parseInt($('.section-seperator').css('marginTop'));
var portfolioPoint = $('#portfolio-anchor').offset().top;
var contactPoint = $('#contact-anchor').offset().top;
if (scrollTop < aboutPoint) {
$('#home-btn').addClass('on-section');
$('#about-btn').removeClass('on-section');
} else if (scrollTop > aboutPoint && scrollTop < (portfolioPoint - navHeight)) {
$('#home-btn').removeClass('on-section');
$('#about-btn').addClass('on-section');
$('#portfolio-btn').removeClass('on-section');
} else if (scrollTop > (portfolioPoint - navHeight) && scrollTop < contactPoint) {
$('#about-btn').removeClass('on-section');
$('#portfolio-btn').addClass('on-section');
$('#contact-btn').removeClass('on-section');
} else if (scrollTop > (contactPoint - navHeight)) {
$('#portfolio-btn').removeClass('on-section');
$('#contact-btn').addClass('on-section');
}
});
$(窗口)。滚动(函数(){
var navHeight=$(“.navbar”).outerHeight();
var scrollTop=$(窗口).scrollTop();
var aboutPoint=$('#about').offset().top;
var lineMargin=parseInt($('.section separator').css('marginTop'));
var portfolioPoint=$(“#投资组合锚”).offset().top;
var contactPoint=$('#contact anchor').offset().top;
如果(滚动顶部<关于点){
$('#home btn').addClass('on-section');
$(“#about btn”).removeClass('on-section');
}else if(scrollTop>aboutPoint&&scrollTop<(portfolioPoint-navHeight)){
$('#home btn').removeClass('on-section');
$('#about btn').addClass('on-section');
$(“#公文包btn”).removeClass('on-section');
}else if(scrollTop>(portfolioPoint-navHeight)和&scrollTop<触点){
$(“#about btn”).removeClass('on-section');
$(“#公文包btn”).addClass('on-section');
$(“#联系btn”).removeClass('on-section');
}else if(滚动顶部>(触点-导航高度)){
$(“#公文包btn”).removeClass('on-section');
$(“#联系btn”).addClass('on-section');
}
});
对我来说,进行此更改解决了这个问题,我想您忘记了您将滚动顶部
视为滚动顶部+导航栏高度
var scrollTop = $(window).scrollTop() + navHeight;
要突出显示关于的
,请执行以下操作
if (scrollTop > (portfolioPoint - navHeight) && scrollTop < contactPoint)
在这里,您的代码笔工作正常您的更新笔正在运行。切换按钮时,计算中出现问题或条件更好:
} else if (scrollTop > (portfolioPoint - navHeight) && scrollTop < contactPoint)) {
// in this condition you stick too long, you forgot the navHeight
} else if (scrollTop > (contactPoint - navHeight)) {
// therefore you reach this too late
}
}否则如果(scrollTop>(portfolioPoint-navHeight)和&scrollTop(触点-导航高度)){
//所以你来的太晚了
}
在这里的第一个条件中,您需要添加导航高度:
} else if (scrollTop > (portfolioPoint - navHeight) &&
scrollTop < (contactPoint - navHeight))) {
// like this it works
} else if (scrollTop > (contactPoint - navHeight)) {
// and here we go...
}
}如果(滚动顶部>(portfolioPoint-navHeight)和
滚动顶部<(触点-导航高度))){
//像这样就行了
}else if(滚动顶部>(触点-导航高度)){
//现在我们开始。。。
}
} else if (scrollTop > (portfolioPoint - navHeight) && scrollTop < contactPoint)) {
// in this condition you stick too long, you forgot the navHeight
} else if (scrollTop > (contactPoint - navHeight)) {
// therefore you reach this too late
}
} else if (scrollTop > (portfolioPoint - navHeight) &&
scrollTop < (contactPoint - navHeight))) {
// like this it works
} else if (scrollTop > (contactPoint - navHeight)) {
// and here we go...
}