我想添加一个自定义右键菜单到我的web应用程序。这可以在不使用任何预先构建的库的情况下完成吗?如果是这样,如何显示一个简单的自定义右键菜单,不使用第三方JavaScript库?

我的目标是像谷歌Docs做的东西。它允许用户右键单击并显示用户自己的菜单。

注意: 我想学习如何制作我自己的,而不是使用别人已经制作的东西,因为大多数时候,那些第三方库的功能都很臃肿,而我只想要我需要的功能,所以我希望它完全由我手工制作。


当前回答

纯JS和css解决方案,一个真正的动态右键单击上下文菜单,尽管基于预定义的命名约定的元素id,链接等。 jsfiddle 你可以复制粘贴到单个静态HTML页面的代码:

var rgtClickContextMenu = document.getElementById('div-context-menu'); /** close the right click context menu on click anywhere else in the page*/ document.onclick = function(e) { rgtClickContextMenu.style.display = 'none'; } /** present the right click context menu ONLY for the elements having the right class by replacing the 0 or any digit after the "to-" string with the element id , which triggered the event */ document.oncontextmenu = function(e) { //alert(e.target.id) var elmnt = e.target if (elmnt.className.startsWith("cls-context-menu")) { e.preventDefault(); var eid = elmnt.id.replace(/link-/, "") rgtClickContextMenu.style.left = e.pageX + 'px' rgtClickContextMenu.style.top = e.pageY + 'px' rgtClickContextMenu.style.display = 'block' var toRepl = "to=" + eid.toString() rgtClickContextMenu.innerHTML = rgtClickContextMenu.innerHTML.replace(/to=\d+/g, toRepl) //alert(rgtClickContextMenu.innerHTML.toString()) } } .cls-context-menu-link { display: block; padding: 20px; background: #ECECEC; } .cls-context-menu { position: absolute; display: none; } .cls-context-menu ul, #context-menu li { list-style: none; margin: 0; padding: 0; background: white; } .cls-context-menu { border: solid 1px #CCC; } .cls-context-menu li { border-bottom: solid 1px #CCC; } .cls-context-menu li:last-child { border: none; } .cls-context-menu li a { display: block; padding: 5px 10px; text-decoration: none; color: blue; } .cls-context-menu li a:hover { background: blue; color: #FFF; } <!-- those are the links which should present the dynamic context menu --> <a id="link-1" href="#" class="cls-context-menu-link">right click link-01</a> <a id="link-2" href="#" class="cls-context-menu-link">right click link-02</a> <!-- this is the context menu --> <!-- note the string to=0 where the 0 is the digit to be replaced --> <div id="div-context-menu" class="cls-context-menu"> <ul> <li><a href="#to=0">link-to=0 -item-1 </a></li> <li><a href="#to=0">link-to=0 -item-2 </a></li> <li><a href="#to=0">link-to=0 -item-3 </a></li> </ul> </div>

其他回答

<html>
<head>
<style>
.rightclick {
    /* YOUR CONTEXTMENU'S CSS */
    visibility: hidden;
    background-color: white;
    border: 1px solid grey;
    width: 200px;
    height: 300px;
}
</style>
</head>
<body>
  <div class="rightclick" id="ya">
    <p onclick="alert('choc-a-late')">I like chocolate</p><br><p onclick="awe-so-me">I AM AWESOME</p>
  </div>
  <p>Right click to get sweet results!</p>
</body>
<script>
    document.onclick = noClick;
    document.oncontextmenu = rightClick;
    function rightClick(e) {
        e = e || window.event;
        e.preventDefault();
        document.getElementById("ya").style.visibility = "visible";
        console.log("Context Menu v1.3.0 by IamGuest opened.");
   }
function noClick() {
    document.getElementById("ya").style.visibility = "hidden";
    console.log("Context Menu v1.3.0 by IamGuest closed.");
}
</script>
<!-- Coded by IamGuest. Thank you for using this code! -->
</html>

您可以调整和修改这段代码,使上下文菜单看起来更美观、更高效。至于修改一个现有的上下文菜单,我不知道如何做到这一点…看看这把小提琴,有组织的观点。另外,试着点击我的上下文菜单中的项目。他们应该提醒你一些很棒的信息。如果它们不起作用,那就试试别的……复杂。

试试这个

$(function() {
var doubleClicked = false;
$(document).on("contextmenu", function (e) {
if(doubleClicked == false) {
e.preventDefault(); // To prevent the default context menu.
var windowHeight = $(window).height()/2;
var windowWidth = $(window).width()/2;
if(e.clientY > windowHeight && e.clientX <= windowWidth) {
  $("#contextMenuContainer").css("left", e.clientX);
  $("#contextMenuContainer").css("bottom", $(window).height()-e.clientY);
  $("#contextMenuContainer").css("right", "auto");
  $("#contextMenuContainer").css("top", "auto");
} else if(e.clientY > windowHeight && e.clientX > windowWidth) {
  $("#contextMenuContainer").css("right", $(window).width()-e.clientX);
  $("#contextMenuContainer").css("bottom", $(window).height()-e.clientY);
  $("#contextMenuContainer").css("left", "auto");
  $("#contextMenuContainer").css("top", "auto");
} else if(e.clientY <= windowHeight && e.clientX <= windowWidth) {
  $("#contextMenuContainer").css("left", e.clientX);
  $("#contextMenuContainer").css("top", e.clientY);
  $("#contextMenuContainer").css("right", "auto");
  $("#contextMenuContainer").css("bottom", "auto");
} else {
  $("#contextMenuContainer").css("right", $(window).width()-e.clientX);
  $("#contextMenuContainer").css("top", e.clientY);
  $("#contextMenuContainer").css("left", "auto");
  $("#contextMenuContainer").css("bottom", "auto");
}
 $("#contextMenuContainer").fadeIn(500, FocusContextOut());
  doubleClicked = true;
} else {
  e.preventDefault();
  doubleClicked = false;
  $("#contextMenuContainer").fadeOut(500);
}
});
function FocusContextOut() {
 $(document).on("click", function () {
   doubleClicked = false; 
   $("#contextMenuContainer").fadeOut(500);
   $(document).off("click");           
 });
}
});

http://jsfiddle.net/AkshayBandivadekar/zakn7Lwb/14/

我使用类似于下面jsfiddle的东西

function onright(el, cb) {
    //disable right click
    document.body.oncontextmenu = 'return false';
    el.addEventListener('contextmenu', function (e) { e.preventDefault(); return false });
    el.addEventListener('mousedown', function (e) {
        e = e || window.event;
        if (~~(e.button) === 2) {
            if (e.preventDefault) {
                e.preventDefault();
            } else {
                e.returnValue = false;
            }
            return false;
        }
    });

    // then bind Your cb
    el.addEventListener('mousedown', function (e) {
        e = e || window.event;
        ~~(e.button) === 2 && cb.call(el, e);
    });
}

如果你的目标浏览器是旧的IE浏览器,你应该用' attachEvent;情况下

<script language="javascript" type="text/javascript">
  document.oncontextmenu = RightMouseDown; 
  document.onmousedown = mouseDown; 

  function mouseDown(e) {
    if (e.which==3) {//righClick
      alert("Right-click menu goes here");
    } 
  }

  function RightMouseDown() { 
    return false; 
  }
</script>
</body> 
</html>

一个简单的方法是使用onContextMenu返回一个JavaScript函数:

<input type="button" value="Example" onContextMenu="return RightClickFunction();">

<script>
 function RightClickFunction() {
  // Enter your code here;
  return false;
 }
</script>

7:13进入的时候,回的是虚假。您将取消上下文菜单。

如果你仍然想显示上下文菜单,你可以删除返回false;线。