Detailed explanation of how to use jquery to add, save, and delete table data

We often do not process this data by submitting forms, because it is very cumbersome to traverse and process these large amounts of data in the background; a better approach is to save the data in json in the form of objects in the front-end page , and then directly convert json into the object we need in the background, so that we can directly process the object!

Add button

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

table id is pswd_basic_fill_template
Add method

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 
}

Save button

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

Save method

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; 
}

The front-end operation is completed, let’s take a look at the background operation
struts configuration file

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

Background operation

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

Let’s take a look at the delete operation
Delete button

//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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