blur() loses focus and focus() gets focus event in jquery

In the past, when we wrote various input events in js, we would write them directly in the input. Yesterday, I started to fully use jquery. Now let’s talk about my study notes on the jquery blur() focus() event.

For the focus event of the element, we can use jQuery's focusfunctionfocus(), blur().

focus(): Used when focus is obtained, the same asonfocusinjavascript.

Such as:

$("p").focus(); 或$("p").focus(fn)

Such as: blur(): used when the focus is lost, the same as onblur.

$("p").blur(); 或$("p").blur(fn)

Example

 
  Enter your name:  
请在上面的输入域中点击，使其获得焦点，然后在输入域外面点击，使其失去焦点。
 

When the mouse is clicked in the search box, the text inside disappears.

      
  
   
 
input失去焦点和获得焦点jquery焦点事件插件，
鼠标在搜索框中点击的时候里面的文字就消失了。
  

An ajax value to determine whether to show or hide p

 * 手机：  用房乐网会员登录名可获取5房乐币   js $(function(){ $('#tgmo').blur(function(){ $.post('post.php?action=check',{'tgmo':$('tgmo').val()},function(data) { if( data==0 ) { $('#sy_a').show(); $('#autoregister').val(1); } else { $('#sy_a').hide(); $('#autoregister').val(0); } }); }) });

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