HTML DOM Select multiple property
Select Objects Definition and Usage
multiple property sets or returns whether there is more than one option is selected.
grammar
Setting multiple properties:
selectObject.multiple=true|false
Returns multiple properties:
selectObject.multiple
Browser Support
All major browsers support multiple attributes
Examples
Examples
Select multiple options in the drop-down menu:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script>
function displayResult(){
document.getElementById("mySelect").multiple=true;
}
</script>
</head>
<body>
<form>
<select id="mySelect" size="4">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
</form>
<button type="button" onclick="displayResult()">允许多个选择</button>
<p>按下Ctrl键来选择多个选项</p>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script>
function displayResult(){
document.getElementById("mySelect").multiple=true;
}
</script>
</head>
<body>
<form>
<select id="mySelect" size="4">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
</form>
<button type="button" onclick="displayResult()">允许多个选择</button>
<p>按下Ctrl键来选择多个选项</p>
</body>
</html>
try it"
Select Objects