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
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