其实这是个非常入门的问题，基本的属性
忘记了，就顺手写了下
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus®">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>Document</title>
</head>
<body>
<script type="text/javascript">
<!--
function clickBjjb() {
var checkboxStr=document.getElementsByName("bjjb");
var str = "";
for (var i=0; i<checkboxStr.length; i++ )
{
if(checkboxStr[i].checked)
{
if (str != "")
{
str = str + ",";
}
str = str + checkboxStr[i].value;
}
}
alert(str);
}
//-->
</script>
<body>
<form id="checkboxform" method="post" action="">
<input type="checkbox" name="bjjb" value="1">交通事故<br>
<input type="checkbox" name="bjjb" value="2">自然灾害<br>
<input type="checkbox" name="bjjb" value="3">恶劣天气<br>
<input type="checkbox" name="bjjb" value="4">严重违法行为<br>
<input type="checkbox" name="bjjb" value="5">路面损毁<br>
<input type="button" onclick="clickBjjb()" value="点我" />
</form>
</body>
</body>
</html>
其中这个js 还有一种写法
function clickBjjb() {
var checkboxStr=document.getElementsByName("bjjb");
var str = "";
for (var i=0; i<checkboxStr.length; i++ )
{
if(checkboxStr[i].checked)
{
if (str == "")
{
str = checkboxStr[i].value
}else {
str = str + "," + checkboxStr[i].value;
}
}
}
alert(str);
}还有一种数组写法
function clickBjjb() {
var checkboxStr=document.getElementsByName("bjjb");
var strArray = new Array();
for (var i=0; i<checkboxStr.length; i++ ){
if(checkboxStr[i].checked){
strArray.push( checkboxStr[i].value);
}
}
alert(strArray.join(","));
} 题外话：CSDN这个编辑器不太好用，光标定位有问题。