對於業餘愛好者的問題,但我仍然習慣JS。當我在html中有多個類時,如何使用java腳本從下拉菜單中讀取文本。任何幫助將不勝感激。感謝如何閱讀使用javascript的下拉文本
HTML
<div class="field">
<select id="addition_membership_type" class="w230" name="booking.additional_frequentFlyerMembershipType" style="display: none;" aria-disabled="false">
<option class="hide-from-ui-list" value=""> … </option>
<option value="IBP"> … </option>
<option value="JET"> … </option>
</select>
<a id="addition_membership_type-button" class="ui-selectmenu ui-widget ui-state-default ui-selectmenu-dropdown w230 ui-corner-all" aria-owns="addition_membership_type-menu" aria-haspopup="true" tabindex="0" href="#" role="button" style="width: 230px;" aria-disabled="false">
<span class="ui-selectmenu-status">
Jet Privilege
</span>
的Javascript
<script>
$(document).ready (function()
{
var dropdown = $(".field", "#addition_membership_type").text();
if (dropDown == "JET")
{
window.alert();
}
});
</script>
的可能重複[獲取使用JavaScript在下拉列表中選擇值?(HTTP:/ /stackoverflow.com/questions/1085801/get-selected-value-in-dropdown-list-using-javascript) – Daniel
poss可重複的[使用jQuery從下拉列表(選擇框)獲取選定的文本](http://stackoverflow.com/questions/1643227/get-selected-text-from-drop-down-list-select-box-使用-jquery) –