Example sharing of adding clear function to Jquery EasyUI component
本文主要为大家带来一篇为Jquery EasyUI 组件加上清除功能的方法(详解)。小编觉得挺不错的,现在就分享给大家,也给大家做个参考。一起跟随小编过来看看吧,希望能帮助到大家。
1、背景
在使用 EasyUI 各表单组件时,尤其是使用 ComboBox(下拉列表框)、DateBox(日期输入框)、DateTimeBox(日期时间输入框)这三个组件时,经常有这样的需求,下拉框或日期只允许选择、不允许手动输入,这时只要在组件选项中加入 editable:false 就可以实现,但有一个问题,就是:一旦选择了,没办法清空。经过研究,可以用一个变通的解决方案:给组件加上一个“清除”按钮,当有值是,显示按钮,点击按钮可清空值,当无值是,隐藏按钮。
2、函数定义
定义JS方法,为 EasyUI 中一些常用组件添加'清除'按钮及功能。共计6个:
/* * 为‘文本框'列表添加‘清除'图标 * 该实现使用了 onChange 事件,如果用户需要该事件,可传入自定义函数,会自动回调 。 */ function addClear4TextBox(theId,onChangeFun) { var theObj = $(theId); //根据当前值,确定是否显示清除图标 var showIcon = function(){ var icon = theObj.textbox('getIcon',0); if (theObj.textbox('getValue')){ icon.css('visibility','visible'); } else { icon.css('visibility','hidden'); } }; theObj.textbox({ //添加清除图标 icons:[{ iconCls:'icon-clear', handler: function(e){ theObj.textbox('clear'); } }], //值改变时,根据值,确定是否显示清除图标 onChange:function(){ if(onChangeFun) { onChangeFun(); } showIcon(); } }); //根据目前值,确定是否显示清除图标 showIcon(); } /* * 为‘下拉列表框'添加‘清除'图标 * 该实现使用了 onChange 事件,如果用户需要该事件,可传入自定义函数,会自动回调 。 */ function addClear4Combobox(theId,onChangeFun) { var theObj = $(theId); //根据当前值,确定是否显示清除图标 var showIcon = function(){ var icon = theObj.combobox('getIcon',0); if (theObj.combobox('getValue')){ icon.css('visibility','visible'); } else { icon.css('visibility','hidden'); } }; theObj.combobox({ //添加清除图标 icons:[{ iconCls:'icon-clear', handler: function(e){ theObj.combobox('clear'); } }], //值改变时,根据值,确定是否显示清除图标 onChange:function(){ if(onChangeFun) { onChangeFun(); } showIcon(); } }); //初始化确认图标显示 showIcon(); } /* * 为‘数据表格下拉框'添加‘清除'图标 * 该实现使用了 onChange 事件,如果用户需要该事件,可传入自定义函数,会自动回调 。 */ function addClear4Combogrid(theId,onChangeFun) { var theObj = $(theId); //根据当前值,确定是否显示清除图标 var showIcon = function(){ var icon = theObj.combogrid('getIcon',0); if (theObj.combogrid('getValue')){ icon.css('visibility','visible'); } else { icon.css('visibility','hidden'); } }; theObj.combogrid({ //添加清除图标 icons:[{ iconCls:'icon-clear', handler: function(e){ theObj.combogrid('clear'); } }], //值改变时,根据值,确定是否显示清除图标 onChange:function(){ if(onChangeFun) { onChangeFun(); } showIcon(); } }); //初始化确认图标显示 showIcon(); } /* * 为‘数值输入框'添加‘清除'图标 * 该实现使用了 onChange 事件,如果用户需要该事件,可传入自定义函数,会自动回调 。 */ function addClear4Numberbox(theId,onChangeFun) { var theObj = $(theId); //根据当前值,确定是否显示清除图标 var showIcon = function(){ var icon = theObj.numberbox('getIcon',0); if (theObj.numberbox('getValue')){ icon.css('visibility','visible'); } else { icon.css('visibility','hidden'); } }; theObj.numberbox({ //添加清除图标 icons:[{ iconCls:'icon-clear', handler: function(e){ theObj.numberbox('clear'); } }], //值改变时,根据值,确定是否显示清除图标 onChange:function(){ if(onChangeFun) { onChangeFun(); } showIcon(); } }); //初始化确认图标显示 showIcon(); } /* * 为‘日期选择框'添加‘清除'图标 * 该实现使用了 onChange 事件,如果用户需要该事件,可传入自定义函数,会自动回调 。 */ function addClear4Datebox(theId,onChangeFun) { var theObj = $(theId); //根据当前值,确定是否显示清除图标 var showIcon = function(){ var icon = theObj.datebox('getIcon',0); if (theObj.datebox('getValue')){ icon.css('visibility','visible'); } else { icon.css('visibility','hidden'); } }; theObj.datebox({ //添加清除图标 icons:[{ iconCls:'icon-clear', handler: function(e){ theObj.datebox('clear'); } }], //值改变时,根据值,确定是否显示清除图标 onChange:function(){ if(onChangeFun) { onChangeFun(); } showIcon(); } }); //初始化确认图标显示 showIcon(); } /* * 为‘日期时间选择框'添加‘清除'图标 * 该实现使用了 onChange 事件,如果用户需要该事件,可传入自定义函数,会自动回调 。 */ function addClear4Datetimebox(theId,onChangeFun) { var theObj = $(theId); //根据当前值,确定是否显示清除图标 var showIcon = function(){ var icon = theObj.datetimebox('getIcon',0); if (theObj.datetimebox('getValue')){ icon.css('visibility','visible'); } else { icon.css('visibility','hidden'); } }; theObj.datetimebox({ //添加清除图标 icons:[{ iconCls:'icon-clear', handler: function(e){ theObj.datetimebox('clear'); } }], //值改变时,根据值,确定是否显示清除图标 onChange:function(){ if(onChangeFun) { onChangeFun(); } showIcon(); } }); //初始化确认图标显示 showIcon(); }
3、使用
用法格式如下:
(1)addClear4TextBox("#name",nameChangeDo); //文本框,同时传入了回调函数
(2)addClear4Combobox("#state\\.id"); //下拉列表框
(3)addClear4Combogrid("#type\\.id"); //数据表格下拉框
(4)addClear4Numberbox("#intNum2"); //数值输入框
(5)addClear4Datebox("#theDate2"); //日期选择框
(6)addClear4Datetimebox("#theTime2"); //日期选择框
注:函数的实现使用了 onChange 事件,如果需要使用该事件执行某些操作,可传入自定义函数,会自动回调 ,参见(1)。
<script> //名称改变时执行的一些操作。(演示清除操作回调) var nameChangeDo = function(){ //alert("改变了..."); } $(function(){ addClear4TextBox("#code"); addClear4TextBox("#name",nameChangeDo); addClear4Combobox("#city"); addClear4Combobox("#state\\.id"); addClear4Combogrid("#type\\.id"); addClear4Combobox("#hobby"); addClear4Numberbox("#intNum2"); addClear4Numberbox("#doubleNum1"); addClear4Numberbox("#doubleNum2"); addClear4Datebox("#theDate2"); addClear4Datetimebox("#theTime2"); addClear4TextBox("#remark"); }); </script>
4、效果展示
(1)有值时的情况(其中 类型 是数据列表下拉框)
(2)无值时的情况
相关推荐:
Jquery下EasyUI组件中的DataGrid结果集清空方法_jquery
jQuery easyui 中使用datetimebox 取两个日期间相隔天数的方法
The above is the detailed content of Example sharing of adding clear function to Jquery EasyUI component. For more information, please follow other related articles on the PHP Chinese website!

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing

This article demonstrates frontend integration with a backend secured by Permit, building a functional EdTech SaaS application using Next.js. The frontend fetches user permissions to control UI visibility and ensures API requests adhere to role-base

JavaScript is the core language of modern web development and is widely used for its diversity and flexibility. 1) Front-end development: build dynamic web pages and single-page applications through DOM operations and modern frameworks (such as React, Vue.js, Angular). 2) Server-side development: Node.js uses a non-blocking I/O model to handle high concurrency and real-time applications. 3) Mobile and desktop application development: cross-platform development is realized through ReactNative and Electron to improve development efficiency.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version
Visual web development tools

Notepad++7.3.1
Easy-to-use and free code editor