您好，我正在编写此代码以根据 url 地址更改我的导航链接颜色，但它无法正常运行，请帮助我。我想更改该特定网址的导航链接的颜色 我的js代码
function big(x){
x.style.fontSize = "17px";
x.style.color="#03c1cb";
}
function small(x){
var y=location.hash;
if(x.href== y){
x.style.fontSize = "17px";
x.style.color="#03c1cb";
}
else{
x.style.color = "white";
x.style.fontSize ="15px";
}
}
和
function isElementInViewport (el) {
//special bonus for those using jQuery
if (typeof jQuery === "function" && el instanceof jQuery) {
el = el[0];
}
var rect = el.getBoundingClientRect();
return (
rect.top >= 0 &&
rect.left >= 0 &&
rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && /*or $j(window).height() */
rect.right <= (window.innerWidth || document.documentElement.clientWidth) /*or $j(window).width() */
);
}
// url change on clicking
$(document).ready(function () {
$(".scroll").click(function (e) {
e.preventDefault();
var section = this.href,
sectionClean = section.substring(section.indexOf("#"));
$("html, body").animate({
scrollTop: $j(sectionClean).offset().top
}, 1000, function () {
window.location.hash = sectionClean;
});
});
});
// listen for the scroll event
$(document).on("scroll", function() {
console.log("onscroll event fired...");
// check if the anchor elements are visible
$(".anchor").each(function (idx, el) {
if ( isElementInViewport(el) ) {
// update the URL hash
if (window.history.pushState) {
var urlHash = "#" + $j(el).attr("id");
window.history.pushState(null, null, urlHash);
}
}
});
});
我的html代码是
<a href="#home" id="start1" class="scroll" style="text-decoration:none;position:absolute;right:450px;top:37px;font-weight:bold;color:white;font-size:15px;z-index:200;transition:0.5s" onmouseover="big(this)" onmouseout="small(this)">HOME</a>
请帮帮我
最佳答案
您将 href 颜色设置为白色，因此它不可见。将背景颜色更改为深色
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
<style>
body {background-color:lightgray}
</style>
</head>
<body>
<a href="#home" id="start1" class="scroll" style="text-decoration:none;position:absolute;right:450px;top:37px;font-weight:bold;color:white;font-size:15px;z-index:200;transition:0.5s" onmouseover="big(this)" onmouseout="small(this)">HOME</a>
<script>
function big(x){
console.log(x.id);
var x = document.getElementById(x.id);
x.style.fontSize = "17px";
x.style.color="#03c1cb";
}
function small(x){
var y=location.hash;
if(x.href== y){
x.style.fontSize = "17px";
x.style.color="#03c1cb";
}
else{
x.style.color = "white";
x.style.fontSize ="15px";
}
}
</script>
</body>
</html>
关于javascript - 为什么导航颜色不变，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30763072/