<!DOCTYPE html>
<html>
<head>
<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<script type="text/javascript">
//起始背景色函数
window.onload = function(){
var trs = document.getElementsByTagName('tr');
for (var i = 0; i < trs.length; i++){
setOver(trs[i]);
setOut(trs[i]);
};
}
//背景色函数
function setOver (obj) {
obj.onmouseover = function(){
this.style.backgroundColor = "##f2f2f2"
};
}
function setOut (obj) {
obj.onmouseout = function(){
this.style.backgroundColor = "#fff"
};;
}
//删除函数
function removeLine (obj) {
var oG = obj.parentNode.parentNode.parentNode;
var oP = obj.parentNode.parentNode;
oG.removeChild(oP);
}
//添加函数
function newLine () {
var stuName = prompt("enter name","");
var stuId = prompt("enter number","");
var objTr = document.createElement('tr');
objTr.innerHTML =
"<td>"+stuId+"</ td><td>"+stuName+"</ td><td><a href = 'javascript:;' onclick = 'removeLine(this)' >删除</ a></ td> ";
setOver(objTr);
setOut(objTr);
document.getElementById('table').lastChild.appendChild(objTr);
}
</script>
</head>
<body>
<table border="1" width="50%" id="table">
<tr>
<th>学号</th>
<th>姓名</th>
<th>操作</th>
</tr>
<tr>
<td>xh001</td>
<td>王小明</td>
<td><a href="javascript:;" onclick = "removeLine(this)">删除</a></td> <!--在删除按钮上添加点击事件 -->
</tr>
<tr>
<td>xh002</td>
<td>刘小芳</td>
<td><a href="javascript:;" onclick = "removeLine(this)">删除</a></td> <!--在删除按钮上添加点击事件 -->
</tr>
</table>
<input type="button" value="添加一行" onclick="newLine()" /> <!--在添加按钮上添加点击事件 -->
</body>
</html>因为想要给新增项上加颜色,所以 声明了一个setOver setOut 函数,想要在创建新行的时候调用。但是就是无动于衷啊。急死我了,求同学们指导啊!
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