jQuery触发文档事件到一个DIV

Question

我对 jQuery 完全陌生。 我想要做的是过滤某些事件进入 DIV。

我的页面中有关注

<div id="overlay"></div> 
<div id="GameDiv" style="width:1280px; height: 720px;"></div>

叠加有以下样式

  <style>
  #overlay {
  position: fixed; /* Sit on top of the page content */
  display: block; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0; 
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(1,0,0,0.5); /* Black background with opacity */
  z-index: 200; /* Specify a stack order in case you're using a different order for other elements */
  pointer-events: auto
}
  </style>

我有以下代码

$(document).on(
{
    mousedown:mouseEvent,
    mouseup:mouseEvent,
}); 
$("GameDiv").on(
{
    mousedown:divEvent,
    mouseup:divEvent,
});
function divEvent(e)
{
    console.log("div event"+e);
}
function mouseEvent(e)
{ 
    console.log("doc event" + e);
    var evnt =  jQuery.Event(e.type,e);
    $("GameDiv").trigger(evnt)
}

现场示例：

$(document).on(
{
    mousedown:mouseEvent,
    mouseup:mouseEvent,
}); 
$("GameDiv").on(
{
    mousedown:divEvent,
    mouseup:divEvent,
});
function divEvent(e)
{
    console.log("div event"+e);
}
function mouseEvent(e)
{ 
    console.log("doc event" + e);
    var evnt =  jQuery.Event(e.type,e);
    $("GameDiv").trigger(evnt)
}

#overlay {
  position: fixed; /* Sit on top of the page content */
  display: block; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0; 
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(1,0,0,0.5); /* Black background with opacity */
  z-index: 200; /* Specify a stack order in case you're using a different order for other elements */
  pointer-events: auto
}

<div id="overlay"></div> 
<div id="GameDiv" style="width:1280px; height: 720px;"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

我正在获取文档鼠标事件。 但我没有收到第二个 div 事件。

我做错了什么？

有更好的方法吗？

Answer 1

在这里，你犯了两个错误。

1. 覆盖在您已应用鼠标事件的 div 上。

2. 您应该使用主题标签 # 以便按 id 属性进行选择， 您还必须在按类属性选择时使用点.。

$(document).on({
  mousedown: mouseEvent,
  mouseup: mouseEvent,
});

$("#GameDiv").on({
  mousedown: divEvent,
  mouseup: divEvent,
});

function divEvent(e) {
  console.log("div event" + e);
}

function mouseEvent(e) {
  console.log("doc event" + e);
  //var evnt = jQuery.Event(e.type, e);
  //$("#GameDiv").trigger(evnt);
  
}

#overlay {  position: fixed;  /* Sit on top of the page content */  display: block;  /* Hidden by default */  width: 100%;  /* Full width (cover the whole page) */  height: 100%;  /* Full height (cover the whole page) */  top: 0;  left: 0;  right: 0;  bottom: 0;  background-color: rgba(1, 0, 0, 0.5);  /* Black background with opacity */  z-index: 200;  /* Specify a stack order in case you're using a different order for other elements */  pointer-events: auto}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!-- div class="overlay"></div comented just to illustrate-->
<div id="GameDiv" style="width:1280px; height: 720px;"></div>

Answer 2

要获取这两个事件，您可以按照以下代码 sn-p。

$(document).on(
{
    mousedown: mouseEvent,
    mouseup: mouseEvent,
});
    $("#GameDiv").on("click", divEvent);
    
    function divEvent(e) {
        console.log("div event" + e);
    }
    function mouseEvent(e) {
        console.log("doc event" + e);
        var evnt = jQuery.Event(e.type, e);
        $("GameDiv").trigger(evnt)
    }

#overlay {
  
  display: block; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0; 
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(1,0,0,0.5); /* Black background with opacity */
  z-index: 200; /* Specify a stack order in case you're using a different order for other elements */
  pointer-events: auto
}

<div id="overlay"></div> 
<div id="GameDiv" style="width:1280px; height: 720px;"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

如果你真的需要使用mousedown 和mouseup 事件，你可以按照下面的 sn-p 操作。

 #overlay {
  
  display: block; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0; 
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(1,0,0,0.5); /* Black background with opacity */
  z-index: 200; /* Specify a stack order in case you're using a different order for other elements */
  pointer-events: auto
}

<div id="overlay"></div> 
<div id="GameDiv" style="width:1280px; height: 720px;"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
    $(document).on(
{
    mousedown: mouseEvent,
    mouseup: mouseEvent,
});
    $("#GameDiv").on("mousedown", divEvent);
    $("#GameDiv").on("mouseup", divEvent);
    function divEvent(e) {
        console.log("div event" + e);
    }
    function mouseEvent(e) {
        console.log("doc event" + e);
        var evnt = jQuery.Event(e.type, e);
        $("GameDiv").trigger(evnt)
    }
</script>

另一种解决方案

参考下面的sn-p同时调用两个事件

 #overlay {
  
  display: block; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0; 
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(1,0,0,0.5); /* Black background with opacity */
  z-index: 200; /* Specify a stack order in case you're using a different order for other elements */
  pointer-events: auto

 <div id="overlay"></div> 
<div id="GameDiv" style="width:1280px; height: 720px;"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
    $(document).on(
{
    mousedown: mouseEvent,
    mouseup: mouseEvent,
});
   
    $("#GameDiv").on({
        "mousedown": divEvent,
        "mouseup": divEvent
    });
    function divEvent(e) {
        console.log("div event" + e);
    }
    function mouseEvent(e) {
        console.log("doc event" + e);
        var evnt = jQuery.Event(e.type, e);
        $("GameDiv").trigger(evnt)
    }
</script>

Answer 3

因为您应该在您的 js 中使用正确的选择器：'#GameDiv' 而不仅仅是 'GameDiv'。