101 DOM查询的其他方法
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
window.onload = function(){
var body = document.body;
var html = document.documentElement;
var all = document.all;
all = document.getElementsByTagName("*");
var box1 = document.getElementsByClassName("box1");
var divs = document.getElementsByTagName("div");
var div = document.querySelector(".box1 div");
var box1 = document.querySelector(".box1");
var box1 = document.querySelectorAll(".box1");
var box1 = document.querySelectorAll("#box1");
};
</script>
</head>
<body>
<div class="box1">
<div>我是box1中的div</div>
</div>
<div class="box1">
<div>我是box1中的div</div>
</div>
<div id="box1">
<div>我是box1中的div</div>
</div>
</body>
</html>
102 DOM增删改
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
function myClick(idStr, fun) {
var btn = document.getElementById(idStr);
btn.onclick = fun;
}
window.onload = function(){
myClick("btn01", function(){
var li = document.createElement("li");
var gzText = document.createTextNode("广州");
li.appendChild(gzText);
var city = document.getElementById("city");
city.appendChild(li);
});
myClick("btn02", function(){
var li = document.createElement("li");
var gzText = document.createTextNode("广州");
li.appendChild(gzText);
var bj = document.getElementById("bj");
var city = document.getElementById("city");
city.insertBefore(li, bj);
});
myClick("btn03", function(){
var li = document.createElement("li");
var gzText = document.createTextNode("广州");
li.appendChild(gzText);
var bj = document.getElementById("bj");
var city = document.getElementById("city");
city.replaceChild(li, bj);
});
myClick("btn04", function(){
var bj = document.getElementById("bj");
var city = document.getElementById("city");
bj.parentNode.removeChild(bj);
});
myClick("btn05", function(){
var city = document.getElementById("city");
alert(city.innerHTML);
});
myClick("btn06", function(){
var bj = document.getElementById("bj");
bj.innerHTML = "昌平";
});
myClick("btn07", function(){
var city = document.getElementById("city");
var li = document.createElement("li");
li.innerHTML = "广州";
city.appendChild(li);
});
};
</script>
</head>
<body>
<div id="total">
<div class="inner">
<p>你喜欢哪个城市</p>
<ul id="city">
<li id="bj">北京</li>
<li>上海</li>
<li>成都</li>
<li>深圳</li>
</ul>
</div>
</div>
<div id="btnList">
<div><button id="btn01">创建一个“广州”节点,添加到#city下</button></div>
<div><button id="btn02">将“广州”节点插入到#bj前面</button></div>
<div><button id="btn03">使用“广州”节点替换#bj节点</button></div>
<div><button id="btn04">删除#bj节点</button></div>
<div><button id="btn05">读取#city内的HTML代码</button></div>
<div><button id="btn06">设置#bj内的HTML代码</button></div>
<div><button id="btn07">创建一个“广州”节点,添加到#city下(innerHTML)</button></div>
</div>
</body>
</html>
103 添加删除记录-删除
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
window.onload = function(){
var allA = document.getElementsByTagName("a");
for(var i = 0; i < allA.length; i++){
allA[i].onclick = function(){
var tr = this.parentNode.parentNode;
var name = tr.children[0].innerHTML;
var flag = confirm("确认删除" + name + "吗");
if(flag){
tr.parentNode.removeChild(tr);
}
return false
};
}
};
</script>
</head>
<body>
<table id="employeeTable">
<tr>
<th>Name</th>
<th>Email</th>
<th>Salary</th>
<th> </th>
</tr>
<tr>
<td>Tom</td>
<td>tom@tom.com</td>
<td>5000</td>
<td><a href="javascript:;">Delete</a></td>
</tr>
<tr>
<td>Jerry</td>
<td>jerry@sohu.com</td>
<td>8000</td>
<td><a href="deleteEmp?id=002">Delete</a></td>
</tr>
<tr>
<td>Bob</td>
<td>bob@tom.com</td>
<td>10000</td>
<td><a href="deleteEmp?id=003">Delete</a></td>
</tr>
</table>
<div id="formDiv">
<h4>添加新员工</h4>
<table>
<tr>
<td class="word">name: </td>
<td class="inp">
<input type="text" name="empName" id="empName" />
</td>
</tr>
<tr>
<td class="word">email: </td>
<td class="inp">
<input type="text" name="email" id="email" />
</td>
</tr>
<tr>
<td class="word">salary: </td>
<td class="inp">
<input type="text" name="salary" id="salary" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<button id="addEmpButton" value="abc">
Submit
</button>
</td>
</tr>
</table>
</div>
</body>
</html>
104 添加删除记录-添加
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
function delA(){
var tr = this.parentNode.parentNode;
var name = tr.children[0].innerHTML;
var flag = confirm("确认删除" + name + "吗");
if(flag){
tr.parentNode.removeChild(tr);
}
return false
}
window.onload = function(){
var allA = document.getElementsByTagName("a");
for(var i = 0; i < allA.length; i++){
allA[i].onclick = delA;
}
var addEmpButton = document.getElementById("addEmpButton");
addEmpButton.onclick = function(){
var name = document.getElementById("empName").value;
var email = document.getElementById("email").value;
var salary = document.getElementById("salary").value;
var tr = document.createElement("tr");
var nameTd = document.createElement("td");
var emailTd = document.createElement("td");
var salaryTd = document.createElement("td");
var aTd = document.createElement("td");
var a = document.createElement("a");
var nameText = document.createTextNode("name");
var emailText = document.createTextNode("email");
var salaryText = document.createTextNode("salary");
var delText = document.createTextNode("Delete");
nameTd.appendChild(nameText);
emailTd.appendChild(emailText);
salaryTd.appendChild(salaryText);
a.appendChild(delText);
aTd.appendChild(a);
tr.appendChild(nameTd);
tr.appendChild(emailTd);
tr.appendChild(salaryTd);
tr.appendChild(aTd);
a.href = "javascript:;";
a.onclick = delA;
var employeeTable = document.getElementById("employeeTable");
var tbody = employeeTable.getElementsByTagName("tbody")[0];
tbody.appendChild(tr);
}
};
</script>
</head>
<body>
<table id="employeeTable">
<tr>
<th>Name</th>
<th>Email</th>
<th>Salary</th>
<th> </th>
</tr>
<tr>
<td>Tom</td>
<td>tom@tom.com</td>
<td>5000</td>
<td><a href="javascript:;">Delete</a></td>
</tr>
<tr>
<td>Jerry</td>
<td>jerry@sohu.com</td>
<td>8000</td>
<td><a href="deleteEmp?id=002">Delete</a></td>
</tr>
<tr>
<td>Bob</td>
<td>bob@tom.com</td>
<td>10000</td>
<td><a href="deleteEmp?id=003">Delete</a></td>
</tr>
</table>
<div id="formDiv">
<h4>添加新员工</h4>
<table>
<tr>
<td class="word">name: </td>
<td class="inp">
<input type="text" name="empName" id="empName" />
</td>
</tr>
<tr>
<td class="word">email: </td>
<td class="inp">
<input type="text" name="email" id="email" />
</td>
</tr>
<tr>
<td class="word">salary: </td>
<td class="inp">
<input type="text" name="salary" id="salary" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<button id="addEmpButton" value="abc">
Submit
</button>
</td>
</tr>
</table>
</div>
</body>
</html>
105 添加删除记录-修改
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script type="text/javascript">
function delA(){
var tr = this.parentNode.parentNode;
var name = tr.children[0].innerHTML;
var flag = confirm("确认删除" + name + "吗");
if(flag){
tr.parentNode.removeChild(tr);
}
return false
}
window.onload = function(){
var allA = document.getElementsByTagName("a");
for(var i = 0; i < allA.length; i++){
allA[i].onclick = delA;
}
var addEmpButton = document.getElementById("addEmpButton");
addEmpButton.onclick = function(){
var name = document.getElementById("empName").value;
var email = document.getElementById("email").value;
var salary = document.getElementById("salary").value;
var tr = document.createElement("tr");
tr.innerHTML = "<td>" + name + "</td>" +
"<td>" + email + "</td>" +
"<td>" + salary + "</td>" +
"<td><a href='javascript:;'>Delete</a></td>";
var a = tr.getElementsByTagName("a")[0];
a.onclick = delA;
var employeeTable = document.getElementById("employeeTable");
var tbody = employeeTable.getElementsByTagName("tbody")[0];
tbody.appendChild(tr);
}
};
</script>
</head>
<body>
<table id="employeeTable">
<tr>
<th>Name</th>
<th>Email</th>
<th>Salary</th>
<th> </th>
</tr>
<tr>
<td>Tom</td>
<td>tom@tom.com</td>
<td>5000</td>
<td><a href="javascript:;">Delete</a></td>
</tr>
<tr>
<td>Jerry</td>
<td>jerry@sohu.com</td>
<td>8000</td>
<td><a href="deleteEmp?id=002">Delete</a></td>
</tr>
<tr>
<td>Bob</td>
<td>bob@tom.com</td>
<td>10000</td>
<td><a href="deleteEmp?id=003">Delete</a></td>
</tr>
</table>
<div id="formDiv">
<h4>添加新员工</h4>
<table>
<tr>
<td class="word">name: </td>
<td class="inp">
<input type="text" name="empName" id="empName" />
</td>
</tr>
<tr>
<td class="word">email: </td>
<td class="inp">
<input type="text" name="email" id="email" />
</td>
</tr>
<tr>
<td class="word">salary: </td>
<td class="inp">
<input type="text" name="salary" id="salary" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<button id="addEmpButton" value="abc">
Submit
</button>
</td>
</tr>
</table>
</div>
</body>
</html>