input框获取焦点和失去焦点，select框change事件

时间：2022-11-17 22:19:30

转载：http://www.cnblogs.com/weeky/archive/2012/04/08/2438002.html

 

以下可以直接调用，注意：jQuery引用用的Google.js》

 1 <html xmlns="http://www.w3.org/1999/xhtml">
 2 <head>
 3 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 4 <title>input失去焦点和获得焦点jquery焦点事件插件 - 懒人建站</title>
 5 <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
 6 <script type="text/javascript">
 7 $(document).ready(function(){
 8 //focusblur
 9     jQuery.focusblur = function(focusid) {
10 var focusblurid = $(focusid);
11 var defval = focusblurid.val();
12         focusblurid.focus(function(){
13 var thisval = $(this).val();
14 if(thisval==defval){
15                 $(this).val("");
16             }
17         });
18         focusblurid.blur(function(){
19 var thisval = $(this).val();
20 if(thisval==""){
21                 $(this).val(defval);
22             }
23         });
24         
25     };
26 /*下面是调用方法*/
27     $.focusblur("#searchkey");
28 });
29 </script>
30 </head>
31 
32 <body>
33 <form action="" method="post">
34 <input name="" type="text" value="输入搜索关键词" id="searchkey"/>
35 <input name="" type="submit" id="searchbtn" value="搜索"/>
36 </form>
37 <p>input失去焦点和获得焦点jquery焦点事件插件，<br/><strong style="color:#F00">鼠标在搜索框中点击的时候里面的文字就消失了</strong>。</p>
38 
39 </body>
40 </html>

select 中option的change事件：

1    $("#CSS_Font_Style").change(function(){ 
2                 changeEvent();
3                 })

获取input的内容：

1 var CSS_Border_Width = $("#CSS_Border_Width").val();

获取option的内容：

1 var CSS_Font_Style = $("#CSS_Font_Style").find("option:selected").text();

jQuery动态设置css属性：

 1　　<div id = "divcss"> 
$(".divcss").css({  2                 "border-width":CSS_Border_Width+"px",  3                 "background-color":CSS_Background_Color,  4                 "background-position":CSS_Background_Position,  5                 "background-size":CSS_Background_Size,  6                 "border-color":CSS_Border_Color,  7                 "background-image":CSS_Background_Image,  8                 "font-weight":CSS_Font_Weight,  9                 "font-size":CSS_Font_Size, 10                 "line-height":CSS_Font_Line_Height, 11                 "font-family":CSS_Font_Family, 12                 "font-variant":CSS_Font_Variant, 13                 "border-style":CSS_Border_Style, 14                 "background-repeat":CSS_Background_Repeat, 15                 "background-origin":CSS_Background_Origin, 16                 "background-attachment":CSS_Background_Attachment, 17                 "font-style":CSS_Font_Style, 18             })

 

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