JS增加行复制行删除行的实现代码_javascript技巧

var customerInfoMethod ={
//复制增加行
copyrow:function(obj,id)
{
var rowIndex=obj.parentNode.parentNode.rowIndex;
var resrow=document.getElementById(id);
rowIndex--;
var newRow=resrow.cloneNode(true);//document.createElement("tr");
var parent = resrow.parentNode;
if(parent.lastChild == resrow){
//如果targetElement是parent最后一个子元素，插入newElement
parent.appendChild(newRow);
}else{
//如果不是，插入到targetElement下一个兄弟节点的前面
parent.insertBefore(newRow, resrow.nextSibling);
}

//newRow.innerHTML=resrow.innerHTML;
var selectObj = newRow.getElementsByTagName("select");
for(var a=0;aselectObj[a].options[0].selected=true;
}
var inputObj = newRow.getElementsByTagName("input");
inputObj[0].style.display="";
inputObj[1].style.display="none";
},
//复制增加行
copyrowUpdate:function(obj,id)
{
var rowIndex=obj.parentNode.parentNode.rowIndex;
var resrow=document.getElementById(id);
rowIndex--;
var newRow=resrow.cloneNode(true);//document.createElement("tr");
var parent = resrow.parentNode;
if(parent.lastChild == resrow){
//如果targetElement是parent最后一个子元素，插入newElement
parent.appendChild(newRow);
}else{
//如果不是，插入到targetElement下一个兄弟节点的前面
parent.insertBefore(newRow, resrow.nextSibling);
}
//newRow.innerHTML=resrow.innerHTML;
var selectObj = newRow.getElementsByTagName("select");
for(var a=0;aselectObj[a].options[0].selected=true;
}
var inputObj = newRow.getElementsByTagName("input");
for(var i=0;iinputObj[i].value="0";
}
inputObj[inputObj.length-2].style.display="";
inputObj[inputObj.length-1].style.display="none";
},
//删除行
deleteRow:function(rootId,obj) {
var rootTable = $(rootId);
rootTable.deleteRow(obj.parentNode.parentNode.rowIndex);
}
}

/**
增加行 fanjf
*/
function addRow(tableId,trId){
var tableObj = document.getElementById(tableId);
var trObj = document.getElementById(trId);
//var trIndex = trObj.rowIndex+1;
var rows = tableObj.rows.length;
var cell = "";
var tr = tableObj.insertRow(rows);
for(i=0;i cell= tableObj.rows(rows).insertCell(i);
cell.innerText= trObj.cells(i).innerText;
cell.className= trObj.cells(i).className;
cell.innerHTML= trObj.cells(i).innerHTML;
}
}
/**
删除行 fanjf
*/
function deleteRow(tableId,trId){

var tableObj = document.getElementById(tableId);
var trObj = document.getElementById(trId);

//var trIndex = trObj.rowIndex;//复制tr的行号
var rows = tableObj.rows.length;
if(rows>0){
tableObj.deleteRow(rows-1);
}else{
alert("无可删除的卡号信息！");
}
}