HTML DOM Pilih ukuran properti
Pilih Objek Definisi dan Penggunaan
ukuran set properti atau mengembalikan daftar drop-down sejumlah opsi tampilan.
tatabahasa
Mengatur properti Ukuran:
selectObject.size=integer
Pengembalian sifat size:
selectObject.size
Dukungan Browser
Semua browser utama mendukung atribut ukuran
contoh
contoh
Mengubah jumlah terlihat turun daftar pilihan:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script>
function displayResult(){
document.getElementById("mySelect").size=4;
}
</script>
</head>
<body>
<form>
<select id="mySelect">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
</form>
<button type="button" onclick="displayResult()">修改大小</button>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>本教程(w3big.com)</title>
<script>
function displayResult(){
document.getElementById("mySelect").size=4;
}
</script>
</head>
<body>
<form>
<select id="mySelect">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
</form>
<button type="button" onclick="displayResult()">修改大小</button>
</body>
</html>
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Pilih Objek