JS lets the menu bar always hover over the top, classic code

JS lets the menu bar always hover over the top, classic code


Very simple, you just need to put the following code in JS: $ (function () {
Gets the distance to locate the element from the top of the browser
var NAVH = $ (". Menu"). Offset (). Top;
Scroll bar Events
$ (window). Scroll (function () {
Get the sliding distance of the scroll bar
var Scroh = $ (this). ScrollTop ();
The sliding distance of the scrollbar is greater than or equal to the distance of the anchor element from the top of the browser, fixed, and not fixed
if (SCROH>=NAVH) {
$ (". Menu"). css ({"Position": "Fixed", "top": 0, "left": 0});
}else if (SCROH<NAVH) {
$ (". Menu"). css ({"position": "Static", "margin": "0 Auto"});
}
Console.log (SCROH==NAVH);
})
})
The above. Menu is the class of the menu bar

You can then introduce jquery.min.js

eg

The menu bar always floats at the top of the
var NAVH = $ (". Trade-tab-bot"). Offset (). top;//Gets the distance to locate the element from the top of the browser
Scroll bar Events
$ (window). Scroll (function () {
    Get the sliding distance of the scroll bar
    var Scroh = $ (this). ScrollTop ();
    The sliding distance of the scrollbar is greater than or equal to the distance of the anchor element from the top of the browser, fixed, and not fixed
    if (SCROH>=NAVH) {
        $ (". Trade-tab-bot"). css ({"Position": "Fixed", "top": 0, "left": 0, "Z-index": +, "margin": "0 Auto", "width": "100%"});
    }else if (SCROH<NAVH) {
        $ (". Trade-tab-bot"). css ({"position": "relative", "margin": "0 Auto"});
    }
    Console.log (SCROH==NAVH);
});

JS lets the menu bar always hover over the top, classic code