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How to implement hidden element function in jquery

亚连

Jun 22, 2018 pm 04:38 PM

jqueryhidden element

This article mainly introduces the jquery method of hiding element p by clicking on the blank space and the implementation code. Let’s learn together.

When we develop websites, we often click on the blank space to hide existing elements, p or other elements. This time I will teach you how to use jquery to achieve this special effect.

A jQuery special effect to hide the pop-up layer when clicking on the blank space. Click on the button to pop up the layer. Click on the blank space on the page to disappear the pop-up layer. JS code. The main function is to click the button to display the pop-up layer, and then click anywhere on the page to close the pop-up layer display effect. It is mainly the operation application of $(document).click. Demonstration Demo, effect source code:

CSS code:

* { 
  padding: 0; 
	margin: 0; 
}
#btnShow{ 
  margin: 100px auto 0; 
	width: 90px; 
	display: block; 
}
#pTop{ 
  border: 2px solid #666666; 
	position: absolute; display: none; 
	width: 400px; 
	height: 200px; 
	color: #333; 
	background: #efefef; 
	padding-top: 10px; 
	text-align: center; 
	font: 16px/30px "微软雅黑"; 
	margin-top: -105px; 
	margin-left: -200px; 
	left: 50%; 
	top: 50%;
 }

JS code:

 $(function () { 
   $(&#39;#btnShow&#39;).click(function (event) { 
     //取消事件冒泡 
     event.stopPropagation(); 
     //按钮的toggle,如果p是可见的,点击按钮切换为隐藏的;如果是隐藏的,切换为可见的。 
     $(&#39;#pTop&#39;).toggle(&#39;slow&#39;); 
		 return false;
   }); 
   //点击空白处隐藏弹出层，下面为滑动消失效果和淡出消失效果。
	 $(document).click(function(event){
		 var _con = $(&#39;#pTop&#39;);  // 设置目标区域
		 if(!_con.is(event.target) && _con.has(event.target).length === 0){ // Mark 1
			//$(&#39;#pTop&#39;).slideUp(&#39;slow&#39;);  //滑动消失
			$(&#39;#pTop&#39;).hide(1000);     //淡出消失
		 }
	});
 })

HTML code:

<body>
<input type="button" id="btnShow" value="弹出框按钮" />
<p id="pTop">
 点击空白区域弹出层关闭！
</p>
</body>

After testing, when clicking on the blank space of the page on the mobile phone Iphone, the pop-up layer is closed and fails, and the document writing method is not supported. , Solution: You can add a background layer as a page blank object.

Click on the blank space to hide the pop-up layer Case 2:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>点击空白处关闭弹出层</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
#box{width:300px;height:200px;border:1px solid #000;display:none;}
.btn{color:red;}
</style>
<script type="text/javascript" src="http://www.internetke.com/public/js/jquery.js"></script>
<script type="text/javascript">
$(function(){
  $(".btn").click(function(event){
    var e=window.event || event;
    if(e.stopPropagation){
      e.stopPropagation();
    }else{
      e.cancelBubble = true;
    }  
    $("#box").show();
  });
  $("#box").click(function(event){
    var e=window.event || event;
    if(e.stopPropagation){
      e.stopPropagation();
    }else{
      e.cancelBubble = true;
    }
  });
  document.onclick = function(){
    $("#box").hide();
  };
})
</script>
</head>
<body>
<p id="box"></p>
<span class="btn">点击此处打开弹出层</span><br>点击空白处关闭弹出层
</body>
</html>

Let me share with you the code of the method of hiding the p area by clicking outside the p area in js:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<script type="text/javascript" src="js/jquery-1.4.4.min.js" ></script>
<title></title>
</head>
<style type="text/css">
body
{
background-color:#999999;
} 
#myp
{
background-color:#FFFFFF;
width:250px;
height:250px;
display:none;
　　　　　　}
　　</style>
<body>
<input id="btn" type="button" value="显示p" />
 
<p id="myp">
This is a p;
</p> 
</body> 
<script type="text/javascript">
　　　　var myp = $("#myp");
$(function ()
{
$("#btn").click(function (event) 
{
showp();//调用显示p方法
$(document).one("click", function () 
{//对document绑定一个影藏p方法
$(myp).hide();
}); 
event.stopPropagation();//阻止事件向上冒泡
});
$(myp).click(function (event) 
{
event.stopPropagation();//阻止事件向上冒泡
});
});
　　　　function showp() 
{
$(myp).fadeIn();
}
</script>

The above is I compiled it for everyone, I hope it will be helpful to everyone in the future.

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