function changeTable(){ var tabIndex = document.getElementById("sel").value; for ( var i = 1; i <= 3; i++) { if (i != tabIndex) { document.getElementById("table" + i).style.display = "none"; }else{ document.getElementById("table" + i).style.display = "block"; } } }JS这样写
<head>
<script type="text/javascript">
function changeTable() {
var tabIndex = document.getElementById("sel").value;
for (var i= 1; i <= 3; i++){
var disp = (i == tabIndex) ? "" : "none";
document.getElementById("table" + i).style.display = disp;
}
}
</script>
</head>
<body><select id="sel" onchange="changeTable()">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select><br>表格:
<table border=1 id="table1" style="display:">
<tr>
<td>1111</td>
<tr>
<tr>
<td>1111</td>
<tr>
</table><table border=1 id="table2" style="display:none">
<tr>
<td>2222</td>
<tr>
<tr>
<td>2222</td>
<tr>
</table><table border=1 id="table3" style="display:none">
<tr>
<td>3333</td>
<tr>
<tr>
<td>3333</td>
<tr>
</table>
</body>
</html>
function changeTable(){
var tabIndex = document.getElementById("sel").value;
for ( var i = 1; i <= 3; i++) {
if (i != tabIndex) {
document.getElementById("table" + i).style.display = "none";
}else{
document.getElementById("table" + i).style.display = "block";
}
}
}JS这样写