如何使用jquery对表格数据进行增加、保存、删除操作代码详解

我们往往不是通过提交表单来处理这些数据，因为如果在后台去遍历处理这些大量的数据是非常繁琐的；比较好的做法是在前台页面中将数据以对象形式保存在json中，然后在后台直接将json转换成我们需要的对象，这样我们的直接可以处理对象了！ 

添加按钮 

<input name="button" type="button" value="添加" onClick="addRowForPswdBasicFillTemplate(&#39;pswd_basic_fill_template&#39;)">

table id是pswd_basic_fill_template
添加方法

function addRowForPswdBasicFillTemplate(tid){ 
var applyAreaOptionStr = $('#applyAreaOptionStr').val(); //这里是对select框的一些初始化 
did = tid; 
var tr = $("<tr></tr>").attr("bgcolor","#FFFFFF"); 
tr.append($("<td></td>").html("<input type=&#39;radio&#39; name=&#39;radio&#39; value=&#39;checkbox&#39;></td>")); 
tr.append($("<td></td>").html("")); 
tr.append($("<td></td>").html("<input type=&#39;text&#39; name=&#39;index_name&#39; id=&#39;index_name&#39; />")); 
tr.append($("<td></td>").html("")); 
tr.append($("<td></td>").html("<select name=&#39;apply_Area&#39; id=&#39;apply_Area&#39;>"+applyAreaOptionStr+"</select>")); 
tr.append($("<td></td>").html("<select name=&#39;index_species&#39; id=&#39;index_species&#39;>"+$("#indexSpeciesHtml").val()+"</select>")); 
tr.append($("<td></td>").html("<textarea maxlength=&#39;500&#39; rows=&#39;3&#39; cols=&#39;20&#39; name=&#39;formula&#39; id=&#39;formula&#39;/>")); 
tr.append($("<td></td>").html("<input type=&#39;text&#39; name=&#39;cap&#39; id=&#39;cap&#39; size=&#39;5&#39;/>")); 
tr.append($("<td></td>").html("<input type=&#39;text&#39; name=&#39;base_value&#39; id=&#39;base_value&#39; size=&#39;5&#39;/>")); 
tr.append($("<td></td>").html("<input type=&#39;hidden&#39; id=&#39;orgid&#39; name=&#39;orgid&#39; /> 
<select name=&#39;assessOrg&#39; id=&#39;assessOrg&#39;>"+$("#assessOrgHtml").val()+"</select>")); 
tr.appendTo($("#"+tid)); 
setRowNumber_1(tid); //保存编号，上移下移操作会用到 ，先不关注 
}

保存按钮

<input name="button" type="button" value="保存" onClick="savePswdBasicFillTemplate(&#39;pswd_basic_fill_template&#39;)">

保存方法

function savePswdBasicFillTemplate(tid){ 
did = tid; 
var result = getPswdBasicFillTemplate(); //封装数据操作，请仔细看 
if(result){ 
/* 
if(pswd_basic_fill_template.length<1){ 
showInfo("请添加基础数据标准"); 
return; 
} 
*/ 
for(var i=0;i<pswd_basic_fill_template.length;i++){ 
pswd_basic_fill_template[i]=JSON.stringify(pswd_basic_fill_template[i]); 
} 
$.post("<c:url value=&#39;/secbasicFillTemplate/save&#39;/>",{"tempLateList":"["+pswd_basic_fill_template+"]"}, 
function(data) { 
if("false"==data){ 
showInfo("请先保存基础信息！"); 
}else{ 
//delAllTr("pswd_basic_fill_template"); //删除行 
showInfo("保存成功！") 
if(did!="fjsjbz"){ 
changeTaskType(tid); 
} 
} 
}); 
} 
} 
//基础填报模版 
var pswd_basic_fill_template = {}; 
//要删除的tableId 
var did = "pswd_basic_fill_template"; 
//获取模板值 
function getPswdBasicFillTemplate(){ 
pswd_basic_fill_template=[]; 
var trs=eval("$(\"#"+did + " tbody tr\")"); 
var result=true; 
$.each(trs,function(i,tr){ 
var order = $(tr).find("td:nth-child(2)").text(); 
var indexCode = $(tr).find("input[name=&#39;index_code&#39;]").val(); 
var indexName = $(tr).find("input[name=&#39;index_name&#39;]").val(); 
var indexType = $(tr).find("select[name=&#39;index_type&#39;]").find("option:selected").text(); 
var indexSpecies = $(tr).find("select[name=&#39;index_species&#39;]").find("option:selected").text(); 
var formula = $(tr).find("textarea[name=&#39;formula&#39;]").val(); 
var cap = $(tr).find("input[name=&#39;cap&#39;]").val(); 
var baseValue = $(tr).find("input[name=&#39;base_value&#39;]").val(); 
var assessOrg = $(tr).find("select[name=&#39;assessOrg&#39;]").val(); 
var assessOrgName = $(tr).find("select[name=&#39;assessOrg&#39;]").find("option:selected").text(); 
var idObj = $(tr).find("input[name=&#39;idObj&#39;]").val(); 
var indexValue = $(tr).find("input[name=&#39;index_value&#39;]").val(); 
var templateType = "2"; 
if(did=="zdppbzlb"){ 
templateType = "3"; 
}else if(did=="fjsjbz"){ 
templateType = "4"; 
assessOrg = $(tr).find("select[name=&#39;countyOrg&#39;]").val(); 
} 
var taskType = $("#task_type").val(); 
if(indexCode.length<1){ 
showInfo("指标名称不能为空"); 
result = false; 
return false; 
} 
if(indexName.length<1){ 
showInfo("指标代号不能为空"); 
result = false; 
return false; 
} 
var postIndexId = $(&#39;#postIndex&#39;).val(); 
var postIndexName = $(&#39;#postIndex&#39;).find("option:selected").text(); 
var applyAreaId = $(tr).find("select[name=&#39;apply_Area&#39;]").val(); 
var applyAreaName = $(tr).find("select[name=&#39;apply_Area&#39;]").find("option:selected").text(); 
var pswd_basic_fill_templateBean={ 
"postIndexId":postIndexId,"postIndexName":postIndexName,"applyAreaId":applyAreaId,"applyAreaName":applyAreaName, 
"indexCode":indexCode,"templateType":templateType,"indexValue":indexValue, 
"indexName":indexName,"taskType":taskType,"order":order,"id":idObj,"baseValue":baseValue, 
"indexSpecies":indexSpecies,"formula":formula,"cap":cap,"orgName":assessOrgName,"orgid":assessOrg 
} 
pswd_basic_fill_template.push(pswd_basic_fill_templateBean); 
}) 
return result; 
}

前台的操作就完成了，下面看一看后台的操作
struts配置文件

<method name="save" uri="/secbasicFillTemplate/save"> 
<result name="success" type="redirect">@list</result> 
<result name="failed">secassessment/basicFillTemplate/basicFillTemplateNew</result> 
</method>

后台操作

public void save() { 
String obj = request().getParameter("tempLateList"); 
List<SecBasicFillTemplate> result = JSonUtil.paserJsonArray(SecBasicFillTemplate.class,obj); 
//将json转化为对象 
}

下面看看删除操作
删除按钮

//删除一行的数据 
function delRowForSpacialById(tid){ 
var selObj=getSelRowJnSpacial(tid); 
if(selObj){ 
var result = confirm("确定将记录删除？"); 
if(result){ 
var id = selObj.parent().parent(); 
var idValue = id.find("input[name='idObj']").val(); 
if(idValue!=null && idValue.length>0){ 
$.post("<c:url value=&#39;/secbasicFillTemplate/delete&#39;/>",{"ids":idValue},function(){ 
selObj.parent().parent().remove(); 
}) 
}else{ 
selObj.parent().parent().remove(); 
} 
} 
} 
} 
// 获取选中的行 
function getSelRowJnSpacial(tid){ 
var selObj=eval("$(\"#"+tid+" input[@type=radio][checked]\")"); 
if(selObj.html()!=null){ 
return selObj; 
}else{ 
showInfo("请选择要操作的行"); 
return null; 
} 
} 
struts 配置文件 
<method name="delete" uri="/secbasicFillTemplate/delete" > 
<result name="success" type="redirect">@list</result> 
</method> 
后台方法 
public void delete(String ids) { 
//方法 
} 
上移下移功能 
按钮 
<input name="button" type="button" value="上移" onClick="moveBefore(&#39;pswd_basic_fill_template&#39;)"> 
<input name="button" type="button" value="下移" onClick="moveAfter(&#39;pswd_basic_fill_template&#39;)"> 
//上移行 
function moveBefore(tid){ 
did =tid; 
var selObj= $("input:radio[checked]"); 
if(selObj==null){ 
showInof("请选择要移动的行"); 
}else{ 
var rowIndex = selObj.parent().parent()[0].rowIndex; 
if(parseInt(rowIndex)<=2){ 
showInfo("已经到顶,不能再上移了"); 
return; 
} 
var preObj=selObj.parent().parent().prev(); 
var selRow=selObj.parent().parent().clone(); 
preObj.before(selRow); 
selObj.parent().parent().remove(); 
setRowNumber_1_1(did); 
} 
} 
function setRowNumber_1_1(tid){ 
var fNew = 1; 
var expression="$(\"#"+tid+" tbody tr\")"; 
var tbody=eval(expression); 
$.each(tbody,function(i,tr){ 
if(i>=0){ 
var number=i+1; 
$(tr).find("td:nth-child(2)").text(number); 
} 
}) 
} 
//下移行 
function moveAfter(tid){ 
did =tid; 
var selObj= $("input:radio[checked]"); 
if(selObj==null){ 
showInof("请选择要移动的行"); 
}else{ 
var r1 = selObj.parent().parent()[0].rowIndex; 
var a1 = eval("$(\"#"+did+" tbody tr\")").size(); 
if(parseInt(selObj.parent().parent()[0].rowIndex)-1 >= a1){ 
showInfo("已经到最后一行,不能再下移了"); 
return; 
} 
var nextObj=selObj.parent().parent().next(); 
var selRow=selObj.parent().parent().clone(); 
nextObj.after(selRow); 
selObj.parent().parent().remove(); 
setRowNumber_1_1(tid); 
} 
} 
//设置rowNumber的序号 
function setRowNumber_1(tid){ 
var fNew = 1; 
var expression="$(\"#"+tid+" tbody tr\")"; 
var tbody=eval(expression); 
$.each(tbody,function(i,tr){ 
if(i>=0){ 
var idObj = $(tr).find("input[name=&#39;idObj&#39;]").val(); 
var f = $(tr).find("td:nth-child(4)").find("input[name=&#39;index_code&#39;]").val(); 
if(f!=null){ 
var f1 = f.substring(1); 
if(f1>=0){ 
fNew = parseInt(f1)+1; 
} 
} 
var number=i+1; 
$(tr).find("td:nth-child(2)").text(number); 
if(idObj==null && f==null){ 
var fValue = "<input id=&#39;index_code&#39; name=&#39;index_code&#39; value=&#39;F"+fNew+"&#39; readonly=&#39;true&#39; size=&#39;5&#39;>"; 
if(tid=="zdppbzlb"){ 
fValue = "<input id=&#39;index_code&#39; name=&#39;index_code&#39; value=&#39;K"+fNew+"&#39; readonly=&#39;true&#39; size=&#39;5&#39;>"; 
} 
$(tr).find("td:nth-child(4)").html(fValue); 
$(tr).find("td:nth-child(5)").html($("#selectHtml").val()); 
//var assessOrgHtml = "<input type=&#39;hidden&#39; name=&#39;orgid&#39; id=&#39;orgid&#39;></input>"+$("#assessOrgHtml").val(); 
//$(tr).find("td:last-child").html(assessOrgHtml); 
} 
} 
}) 
}

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