Question

我正在使用Buefy框架（以防您怀疑语法）。我在注释下有一个<div class="level-right" id=hidemenu>，这是我想在汉堡菜单中仅在移动设备中显示的链接。我的问题是我该如何使用Javascript（必须是Javascript）来做到这一点？现在，我所能做的就是通过媒体查询隐藏移动设备中的链接。

有人可以帮忙吗？将不胜感激。

谢谢！

<template>
  <!-- Main container -->
  <nav class="level">
    <!-- Left side -->
    <div class="level-left">
      <div class="level-item">
        <p class="subtitle is-5"><strong>U</strong> Beat</p>
      </div>
      <div class="level-item">
        <div class="field has-addons">
          <p class="control">
            <input class="input" type="text" placeholder="Find a post" />
          </p>
          <p class="control">
            <button class="button">
              Search
            </button>
          </p>
        </div>
      </div>
    </div>

    <!-- Right side -->
    <div class="level-right" id="hidemenu">
      <p class="level-item">
        <router-link to="/Album" class="button is-rounded premierlink"
          >Album</router-link
        >
      </p>
      <p class="level-item">
        <router-link to="/Home" class="button is-rounded premierlink"
          >Home</router-link
        >
      </p>
      <p class="level-item">
        <router-link to="/Playlist" class="button is-rounded premierlink"
          >Playlists</router-link
        >
      </p>
      <p class="level-item">
        <router-link to="/Parameters" class="button is-rounded "
          >Parameters</router-link
        >
      </p>
      <p class="level-item"><a class="button is-primary">Sign out</a></p>
    </div>
  </nav>
</template>

<style>

@media (max-width: 768px) {
  #hidemenu {
    display: none;
  }
}
</style>

Answer 1

您将需要一个isMobile函数。受here的启发：

function isMobile() {
  var check = false;
  (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera);
  return check;
};

现在，让我们确保使用类名而不是ID，因为将来在其他地方可能会有类似的行为，因此请更改

<div class="level-right" id="hidemenu">

到

<div class="level-right mobile">

现在使用class和isMobile function来编写Javascript：

if (isMobile()) {
    var mobileElements = document.getElementsByClassName("mobile");
    for (let mobileElement of mobileElements) mobileElement.style.display = "none";
}

当然，这仅在运行此代码时实际元素已经存在的情况下有效。

如何在移动设备上使用JavaScript创建汉堡菜单？

1 个答案: