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我有一些城市名單在關聯數組在php中。我使用JavaScript「更改」來獲取每個項目的值。我想將項目設置爲默認項目(我想我將來會考慮使用地理位置)。PHP的JavaScript選擇與默認值
這裏我陣列:
// Array lists
$city_array = array(
array('id' => '1', 'name' => 'Aaaa'),
array('id' => '2', 'name' => 'Bbbb'),
array('id' => '3', 'name' => 'Cccc'),
array('id' => '4', 'name' => 'Dddd'),
array('id' => '5', 'name' => 'Eeee'),
);
$json_city = json_encode($city_array);
而且我的PHP函數:
// Decode
$cities = json_decode($json_city);
function display_cities() {
global $cities;
$output = '<select id="citylists" onChange="onSelectCity()">';
foreach($cities as $city) {
$output .= '<option class="itemcity" value="'.$city->id.'">'.$city->name.'</option>';
}
$output .= '</select>';
$output .= '<script type="text/javascript">
function onSelectCity() {
var cityLists = document.getElementById("citylists");
console.log(cityLists.value);
}
window.onload = function() {
onSelectCity();
}
</script>';
echo $output;
}
我想輸出是這樣的(在HTML打印):
<select id="citylists">
<option class="itemcity" value="1">Aaaa</option>
<option class="itemcity" value="2">Bbbb</option>
<option class="itemcity" value="3" selected>Cccc</option>
<option class="itemcity" value="4">Dddd</option>
<option class="itemcity" value="5">Eeee</option>
</select>
,你可以看,我設置的默認值是<option class="itemcity" value="3" selected>Cccc</option>
。
我該怎麼做動態PHP循環內?
感謝
http://stackoverflow.com/的更多鈔票重複問題/ 7571710 /選擇 - 動態默認值選擇 –
嗨,謝謝你提醒:) – mrale81