Div not getting fixed on scrolling
Question
I am trying to make a div fixed to top when I scroll down. But somehow the code is not working...
Please check the code below:
<div id="column-left" class="column_absolute">
My name is Peter
</div>
<script type="text/javascript">
function window_onload() {
alert("hi");
window.addEventListener("scroll", navbar_reset_top, false);
}
var navbar_top = 100;
function navbar_reset_top() {
var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
if (scrollTop > navbar_top && column-left.className === "column_absolute") {
document.getElementById("column-left").className="column_fixed";
}
else if (scrollTop < navbar_top && column-left.className === "column_fixed") {
document.getElementById("column-left").className="column_absolute";
}
}
</script>
<style type="text/css">
.column_absolute {
width: 220px;
padding: 0px 15px 0 0px;
border-right: 1px solid #eee;
margin-left:20px;
position:absolute;
}
.column_fixed {
width: 220px;
position:fixed;
margin-top:0px;
padding: 0px 15px 0 0px;
border-right: 1px solid #eee;
}
</style>
</head>
<body onload="javascript:window_onload()">
When I'm scrolling down, the div mentioned above should be fixed.
Please check the code and correct me please...
2 answers
solution1
1 2014-05-21 10:13:54
Everything works fine in your code, except that you have undefined variable column-left . Probably you missed defining it.
Demo: http://jsfiddle.net/GCu2D/137/
function window_onload() {
alert("hi");
document.addEventListener("scroll", navbar_reset_top, false);
}
var navbar_top = 100;
function navbar_reset_top() {
var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
var column_left = document.getElementById("column-left");
if (scrollTop > navbar_top && column_left.className === "column_absolute") {
document.getElementById("column-left").className = "column_fixed";
} else if (scrollTop < navbar_top && column_left.className === "column_fixed") {
document.getElementById("column-left").className = "column_absolute";
}
}
I used column_left instead of column-left
solution2
0 2014-05-21 10:06:33
the id of the div is column_fixed. you should use # insead of . in your css class to use id selector.
#column_fixed
{
width: 220px;
position:fixed;
margin-top:0px;
padding: 0px 15px 0 0px;
border-right: 1px solid #eee;
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.