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[英]How to reset or set to default selected <option> in <select> after closing the modal
[英]Reset select option after correct answer
長時間的聆聽者,第一次的呼叫者...我有一個音樂測試,要求用戶識別音高,並且在正確答案后,我需要將select選項的值重置為“ disabled selected”。 嘗試過很多事情,但沒有運氣。 任何幫助將不勝感激!
$("#pitchBtn").click(function() { if (gameFinished) { // Clear the value of the option in the select element here } }
<select id="selectText"> <option value="" disabled selected>Enter your guess</option> <option value="C"></option> <option value="D">D</option> <option value="E">E</option> </select>
嘗試
var element = document.getElementById('selectText');
element.value = "";
我建議:
// cache the relevant <option> element,
// retrieve that element using
// document.querySelectorAll() to select
// the first, if any, element matching the
// supplied CSS selector:
let defaultOption = document.querySelectorAll('option[value=""]');
// set the 'selected' property to true:
defaultOption.selected = true;
// set the 'disabled' property to true:
defaultOption.disabled = true;
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