javascript创建动态表单的方法

2024-05-06 16:23:43

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这篇文章主要介绍了javascript创建动态表单的方法,实例分析了javascript动态操作页面表单元素的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了javascript创建动态表单的方法。分享给大家供大家参考。具体实现方法如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<meta http-equiv="Content-Language" content="zh-CN" />

<meta name="Keywords" content="" />

<meta name="Description" content="" />

<title></title>

<style>

#tab {

border:1px solid #aaa;

border-collapse:collapse;

width:80%;

}

#tab th{

border:1px solid #aaaaaa;

background:#ECE9D8;

border-collapse:collapse;

padding:5px;

text-align:left;

}

#tab td{

border:1px solid #d8d8d8;

border-collapse:collapse;

padding:5px;

}

.txt{

border:1px solid #888;

background:#ECE9D8;

}

.checkBg{

border:1px solid #aaaaaa;

background:#ECE9D8;

}

.checkTxt{

border:1px solid #aaa;

background:##d8d8d8;

}

.button {

border:1px solid #888;margin:5px 0px;

width:80px;background:#ECE9D8;height:22px;line-height:22px;

}

</style>

<script language="javascript" type="text/javascript">

function $(id) {return document.getElementById(id);}

function $F(name){return document.getElementsByTagName(name);}

function add(){

var otr = document.getElementById("tab").insertRow(-1);

var checkTd=document.createElement("td");

checkTd.innerHTML = '<input type="checkbox" class="check" onclick="ccolor()" name="checkItem">';

var otd1 = document.createElement("td");

otd1.innerHTML = '<input type="text" class="txt" name="infoName_txt" id="infoName_txt'+($('tab').rows.length-1)+'" maxlength="30" value=""/>';

var otd2 = document.createElement("td");

otd2.innerHTML = '<input type="text" class="txt" name="infoValue_txt" id="infoValue_txt'+($('tab').rows.length-1)+'" maxlength="30" value=""/>';

otr.appendChild(checkTd);

otr.appendChild(otd1);

otr.appendChild(otd2);

}

function ccolor()

{

var c1 = document.getElementsByName('checkItem');

for(var i=0; i<c1.length; i++)

if(c1[i].checked)

{

c1[i].parentNode.parentNode.className="checkBg";

c1[i].parentNode.nextSibling.firstChild.className="checkTxt";

c1[i].parentNode.nextSibling.nextSibling.firstChild.className="checkTxt";

}

else { c1[i].parentNode.parentNode.className="";

c1[i].parentNode.nextSibling.firstChild.className="";

c1[i].parentNode.nextSibling.nextSibling.firstChild.className="";}

}

function del(){

var c = document.getElementsByName('checkItem');

var idArray = new Array();

for(var i=0; i<c.length; i++)

if(c[i].checked)

idArray.push(i);

var rowIndex;

var nextDiff =0;

for(j=0;j< idArray.length;j++)

{

rowIndex = idArray[j]+1-nextDiff++;

document.getElementById("tab").deleteRow(rowIndex);

}

}

function save(){

var postString = $("postString");

var checkboxs = document.getElementsByName("checkItem");

var ttab = document.getElementsByName("infoName_txt");

var tt2 = document.getElementsByName("infoValue_txt");

var idArray = new Array();

for(i=0;i<checkboxs.length;i++)

{

idArray.push(ttab[i].value + "|" + tt2[i].value);

}

postString.value = idArray.join("-");

alert(postString.value);

}

function alldell()

{

var des =document.getElementsByName('checkItem');

for(var i=0;i<des.length;i++)

{

if(des[i].checked=document.getElementById('delall').checked){

des[i].parentNode.parentNode.className="checkBg";

des[i].parentNode.nextSibling.firstChild.className="checkTxt";

des[i].parentNode.nextSibling.nextSibling.firstChild.className="checkTxt";}

else{ des[i].parentNode.parentNode.className="";

des[i].parentNode.nextSibling.firstChild.className="";

des[i].parentNode.nextSibling.nextSibling.firstChild.className="";}

}

}

</script>

</head>

<body>

<input name="addv_btn" id="addv_btn" type="button" class="button" onClick="add();" value="add" />

<input name="del_btn" id="del_btn" type="button" class="button" onClick="del();" value="del" />

<input name="save" id="save" type="button" class="button" onClick="save();" value="save" /><br>

<table id="tab" >

<tr>

<th width="5%"><input type="checkbox" id="delall" onclick="alldell()"></td>

<th width="40%">Name</td>

<th width="55%">value</td>

</tr>

</table>

<p>

<input type="text" name="postString" id="postString">

</p>

</body>

</html>