<html>
<head>
<title>day03</title>
<script type="text/javascript" language="javascript" src="js/myjs.js"></script>
<link type="text/css" rel="stylesheet" href="css/mycss.css"/>
<style>
table{
border-collapse:collapse;
}
td{
border:1px solid gray;
}
tr input{
width:25px;
}
</style>
</head>
<body onload="testNode()">
<form>
<h2>表单的验证与提交</h2>
管理员账号：<input id="account" class="txt" onfocus="this.className='txt_focus';" onblur="valiAcc(this)"/>
<span id="accountInfo">10个长度以内的字母、数字的组合</span><br/>
电话号码：<input id="phone" class="txt" onfocus="this.className='txt_focus';" onblur="valiPhone(this)"/>
<span id="phoneInfo">形如：010-12345678</span><br/><br/>
<input type="submit" value="保存" onclick="alert(valiAll())" />
<h2>节点查询展示</h2>
<div id="div01">
<p id="p01">我是段落1</p>
<p id="p02">我是段落2</p>
<input type="radio" name="sex"/>男
<input type="radio" name="sex"/>女
</div>
<input type="radio" name="sex"/>无
<h2>购物车</h2>
<table id="shoppingCar">
<tr>
<td style="width:100px;">商品名称</td>
<td style="width:100px;">单价</td>
<td style="width:200px;">数量</td>
<td style="width:100px;">小计</td>
</tr>
<tr>
<td style="width:100px;">book1</td>
<td style="width:100px;">10.0</td>
<td style="width:200px;">
<input type="button" value="-" onclick="decrease(this)"/>
<input type="text" value="1" readonly="readonly"/>
<input type="button" value="+" onclick="increase(this)"/>
</td>
<td style="width:100px;">10.0</td>
</tr>
<tr>
<td style="width:100px;">book2</td>
<td style="width:100px;">5.0</td>
<td style="width:200px;">
<input type="button" value="-" onclick="decrease(this)"/>
<input type="text" value="1" readonly="readonly"/>
<input type="button" value="+" onclick="increase(this)"/>
</td>
<td style="width:100px;">5.0</td>
</tr>
<tr>
<td style="width:100px;">book3</td>
<td style="width:100px;">15.0</td>
<td style="width:200px;">
<input type="button" value="-" onclick="decrease(this)"/>
<input type="text" value="1" readonly="readonly"/>
<input type="button" value="+" onclick="increase(this)"/>
</td>
<td style="width:100px;">15.0</td>
</tr>
<tr>
<td colspan="3" style="text-align:right" >总计:</td>
<td>30.0</td>
</tr>
</table>
<h2>节点增加展示</h2>
<div id="div02">
<p>我是第1个段落</p>
</div>
<input type="button" value="增加段落" onclick="addNode()"/>
<input type="button" value="首行增加段落" onclick="addNode2()"/>
<input type="button" value="删除段落" onclick="deleteNode()"/>
<h2>动态创建页面元素</h2>
<input type="button" onclick="productNode(this)" value="添加新元素"/>
</form>
</body>
</html>
function valiAcc(obj){
obj.className= "txt";
var account = obj.value;
var regex = /^[0-9a-zA-Z]{1,10}$/g;
var flag = regex.test(account);
//判断
if(flag){
document.getElementById("accountInfo").className="vali_success";
document.getElementById("accountInfo").innerText="";
}else{
document.getElementById("accountInfo").className="vali_fail";
document.getElementById("accountInfo").innerText="10个长度以内的字母、数字组合";
}
return flag;
}
function valiPhone(obj){
obj.className= "txt";
var account = obj.value;
var regex = /^\d{3}}$/g;
var flag = regex.test(account);
//判断
if(flag){
document.getElementById("phoneInfo").className="vali_success";
document.getElementById("phoneInfo").innerText="";
}else{
document.getElementById("phoneInfo").className="vali_fail";
document.getElementById("phoneInfo").innerText="形如：010-12345678";
}
return flag;
}
function valiAll(){
var acc = document.getElementById("account");
var phone = document.getElementById("phone");
return valiAcc(acc) && valiPhone(phone);
}
function testNode(){
var divObj = document.getElementById("div01");
var parentNode = divObj.parentNode;
//console.log(parentNode.nodeName+","+parentNode.nodeType);
var nodeArr = divObj.childNodes;
for(var i = 0;i<nodeArr.length;i++){
//console.log(nodeArr[i].nodeName+","+nodeArr[i].nodeType);
}
var p02 = document.getElementById("p02");
var p01 = p02.previousSibling.previousSibling;
//console.log(p01.nodeName+","+p01.nodeType);
var sexArr = document.getElementsByName("sex");
//console.log(sexArr.length);
var inputArr = document.getElementsByTagName("input");
var inputAr= divObj.getElementsByTagName("input");
console.log(inputAr.length);
}
//购物车减
function decrease(obj){
var txtObj = obj.nextSibling.nextSibling; //nextSibling 获取下一个节点
if(txtObj.value>0){
txtObj.value--;
}
cal();
}
//购物车加
function increase(obj){
var txtObj = obj.previousSibling.previousSibling; //previousSibling 获取上一个节点
txtObj.value++;
cal();
}
function cal(){
var tbObj = document.getElementById("shoppingCar"); //获取table对象
var trArr = tbObj.getElementsByTagName("tr"); //获取所有的行对象
//定一个计数器，用存储总价值
var totalPrice = 0;
for(var i=1;i<trArr.length-1;i++){
//获取当前行对象
var trObj = trArr[i];
//获取单价
var price = trObj.getElementsByTagName("td")[1].innerText;
//获取数量
var num = trObj.getElementsByTagName("input")[1].value;
//当前商品的小计
var xj = price*num;
//给小计栏赋值
var tdArr = trObj.getElementsByTagName("td");
tdArr[tdArr.length-1].innerText = xj.toFixed(2);
totalPrice += xj;
}
trArr[trArr.length-1].lastChild.previousSibling.innerText = totalPrice.toFixed(2);
}
var n = 1;
function addNode(){
n++;
var divObj = document.getElementById("div02");
var pObj = document.createElement("p"); // <p></p>
pObj.innerText="我是第"+n+"个段落";
divObj.appendChild(pObj);
}
function addNode2(){
var divObj = document.getElementById("div02");
var pObj = document.createElement("p");
pObj.innerText="我是第"+0+"个段落";
divObj.insertBefore(pObj,divObj.getElementsByTagName("p")[0]);
}
function deleteNode(){
if(n>0){
n--;
}
var divObj = document.getElementById("div02");
var pArr = divObj.getElementsByTagName("p");
if(pArr.length>0){
divObj.removeChild(pArr[pArr.length-1]);
}
}
function productNode(obj){
var newButton = document.createElement("input"); //<input></input>
newButton.type="button";
newButton.value="New Button";
newButton.onclick=function(){
alert("hello");
}
obj.parentNode.insertBefore(newButton,obj);
var aObj=document.createElement("a");
aObj.innerHTML="to百度";
aObj.target="_blank";
aObj.href="http://www.baidu.com";
obj.parentNode.appendChild(aObj);
}
