--
CSS
使用 CSS 無差別展開
|
1 2 3 4 5 6 7 8 |
.dropdown:hover>.dropdown-menu { display: block; } .dropdown>.dropdown-toggle:active { /*Without this, clicking will make it sticky*/ pointer-events: none; } |
--
JavaScript
此 mouse hover 的互動邏輯是比較合乎需求的，大於設定寬度時自動展開，小於時需要點擊展開
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 |
<nav class="navbar navbar-expand-md navbar-dark bg-dark"> <div class="container-fluid"> <a class="navbar-brand" href="#"> <img class="logo horizontal-logo" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/162656/horizontal-logo.svg" alt="forecastr logo"> </a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarSupportedContent"> <ul class="navbar-nav ml-auto"> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown2" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Dropdown </a> <div class="dropdown-menu" aria-labelledby="navbarDropdown2"> <a class="dropdown-item" href="#">Action</a> <a class="dropdown-item" href="#">Another action</a> <div class="dropdown-divider"></div> <a class="dropdown-item" href="#">Something else here</a> </div> </li> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown3" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"> Dropdown </a> <div class="dropdown-menu" aria-labelledby="navbarDropdown3"> <a class="dropdown-item" href="#">Action</a> <a class="dropdown-item" href="#">Another action</a> <div class="dropdown-divider"></div> <a class="dropdown-item" href="#">Something else here</a> </div> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> </ul> </div> </div> </nav> |
將 JavaScript 放在 HTML 之後
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
const $dropdown = $(".dropdown"); const $dropdownToggle = $(".dropdown-toggle"); const $dropdownMenu = $(".dropdown-menu"); const showClass = "show"; $(window).on("load resize", function() { if (this.matchMedia("(min-width: 768px)").matches) { $dropdown.hover( function() { const $this = $(this); $this.addClass(showClass); $this.find($dropdownToggle).attr("aria-expanded", "true"); $this.find($dropdownMenu).addClass(showClass); }, function() { const $this = $(this); $this.removeClass(showClass); $this.find($dropdownToggle).attr("aria-expanded", "false"); $this.find($dropdownMenu).removeClass(showClass); } ); } else { $dropdown.off("mouseenter mouseleave"); } }); |
--
473 total views, 1 views today