初学JQuery，写了一个高级检索的动态输入框，如图所示：
实现的功能：
* 当选择属性下拉框中不同类型（字符串、数字、日期）的属性时，后面弹出不同数量的和不同格式的文本框（字符串弹出一个输入文本框，数字型的弹出两个输入文本框，日期型的弹出两个日期选择控件）；
* 单击“添加条件”链接后，下面会增加一行条件输入，可以选择逻辑（与、或、非）、属性。
html部分代码如下：
< div id= "0" class ="row" >
< dd >
<select id = "condition" class= "span2" style = 'width:110px;' >
<option value= 'and' >与 </option >
<option value = 'or'> 或</ option>
<option value= 'not' >非 </option >
</select >
</dd >
< dd >< select id= "attrlist" class= "span2" style = 'width:110px;' >
<s:iterator value= "equipAttrs" id ="attrs" >
<option value= '< s:property value= "#attrs[2]" />' ><s:property value= "#attrs[1]" /></option >
</s:iterator >
</select ></dd >
< dd> <input id = "rangestart" type= "text" class = "span2 search-query"></ dd>
< dd> <div id = "rangeend"> --< input type= "text" class = "span2 search-query" ></div ></dd >
< dd> <div id = "timerange">< input type= "text" id = "datetimepicker1"> --
<input type = "text" id= "datetimepicker2" >
</div ></dd >
<div id = "clickgroup">
< dd> <button id = "searchButton" type= "submit" class = "btn"> 搜索</ button></ dd>
< dd> <a id = "multiSelect" href= "#"> 添加条件 </a ></dd >
</div >
</div >
< div id= "lastrow" ></div >
JQuery代码：
< script type= "text/javascript" src="/UploadFiles/2021-04-02/jquery-1.7.2.min.js" ></ script >
< script type= "text/javascript" >
//用于动态修改新生成的节点id，便于定位子节点，为其添加事件
var conditionCount=1;
$(document).ready( function(){
$( "#rangeend").hide();
$( "#timerange").hide();
$( "#condition").hide();
//为初始节点添加事件
selectClick( "0");
//日期选择控件参数设置
$( '#[id*=datetimepicker]').datetimepicker({
format: 'yyyy-mm-dd',
todayBtn: true,
startView:4,
minView:2,
maxView:4,
startView:4,
todayHighlight: true,
initialDate: new Date(),
autoclose: true,
});
//为“添加条件”添加事件
$( "#multiSelect").click( function(event){
var $nextrow=$( "#0").clone(); //克隆初始节点
$nextrow.attr( "id",conditionCount); //修改复制的节点id，用于定位子节点
$( "#lastrow").before($nextrow);
$( "#"+conditionCount+ " select[id='condition']").show();
$( "#"+conditionCount+ " input[id='rangestart']").show();
$( "#"+conditionCount+ " div[id='rangeend']" ).hide();
$( "#"+conditionCount+ " div[id='timerange']" ).hide();
$( "#"+conditionCount+ " div[id='clickgroup']" ).hide();
var $t1=$( "#"+conditionCount+ " div[id='timerange']").children();
var at=$t1.attr( "id");
$t1.attr( "id",at+ ""+conditionCount);
$t1=$t1.next();
var at1=$t1.attr( "id");
$t1.attr( "id",at1+ ""+conditionCount);
//为新插入的节点添加事件
selectClick(conditionCount);
conditionCount++;
$( '#[id*=datetimepicker]').datetimepicker({
format: 'yyyy-mm-dd',
todayBtn: true,
startView:4,
minView:2,
maxView:4,
startView:4,
todayHighlight: true,
initialDate: new Date(),
autoclose: true,
});
});
});
function selectClick(flag){
/* 三个对象如果放在这里定义的话会出错，每个选择事件都会控制最下面一行的文本框的显示，如果在下面三个事件中分别添加这三行，则事件触发正常
$start=$("div[id="+flag+"]>dd>input[id='rangestart']");
$end=$("div[id="+flag+"]>dd>div[id='rangeend']");
$time=$("div[id="+flag+"]>dd>div[id='timerange']"); */
$( "#"+flag+ ">dd>select[id='attrlist']>option[value*='Date']" ).click( function(){
$start=$( "div[id="+flag+ "]>dd>input[id='rangestart']" );
$end=$( "div[id="+flag+ "]>dd>div[id='rangeend']" );
$time=$( "div[id="+flag+ "]>dd>div[id='timerange']" );
$start.hide();
$end.hide();
$time.show();
});
$( "#"+flag+ ">dd>select[id='attrlist']>option[value*='String']" ).click( function(){
$start=$( "div[id="+flag+ "]>dd>input[id='rangestart']" );
$end=$( "div[id="+flag+ "]>dd>div[id='rangeend']" );
$time=$( "div[id="+flag+ "]>dd>div[id='timerange']" );
$start.show();
$end.hide();
$time.hide();
});
$( "#"+flag+ ">dd>select[id='attrlist']>option[value*='Float']" ).click( function(){
$start=$( "div[id="+flag+ "]>dd>input[id='rangestart']" );
$end=$( "div[id="+flag+ "]>dd>div[id='rangeend']" );
$time=$( "div[id="+flag+ "]>dd>div[id='timerange']" );
$start.show();
$end.show();
$time.hide();
});
}
</ script>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。