在通过ajax动态添加的元素上提交keyup表单

Question

我有两个ID相同的表单。

我希望当你在文本区域键入一个id＝ingevuldNotitie的键时，javascript会提交表单。有没有办法做到这一点，以及如何做到？

<div id="response">
<div id="child_response">
<form action="test.php" method="post" id="notitieForm" onsubmit="return notitieOpslaan();">
<input type="text" id="clientNotitieDatum" value="2022-10-17" name="clientNotitieDatum" hidden="">
<textarea rows="4" cols="50" id="ingevuldNotitie" name="ingevuldNotitie"></textarea>
<input type="submit" name="clientNotitie" value="Notitie opslaan">
</form>
<form action="test.php" method="post" id="notitieForm" onsubmit="return notitieOpslaan();">
<input type="text" id="clientNotitieDatum" value="2022-10-18" name="clientNotitieDatum" hidden="">
<textarea rows="4" cols="50" id="ingevuldNotitie" name="ingevuldNotitie"></textarea>
<input type="submit" name="clientNotitie" value="Notitie opslaan">
</form>
</div>
</div>
<script>
// I tried this
$("#response").bind("keyup", function () {   
$(this).closest('[name=clientNotitieDatum]').submit(); 
});
// And I tried this
$("text[name='ingevuldNotitie']").bind("keyup", function () {
$(this).closest('form').submit();
});
</script>

Answer 1

因为元素是通过ajax动态添加的，所以应该使用$(document).on('keyup', "textarea[name='ingevuldNotitie']", function() {。

Alo，在form的onsubmit中，为函数添加一个参数：

onsubmit="return notitieOpslaan(this);"

并使用该参数来获取表单的数据，例如clientNotitieDatum。

见下面的工作演示：

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="response">
<div id="child_response">
<form action="test.php" method="post" id="notitieForm" onsubmit="return notitieOpslaan(this);">
<input type="text" id="clientNotitieDatum" value="2022-10-17" name="clientNotitieDatum" hidden="">
<textarea rows="4" cols="50" id="ingevuldNotitie" name="ingevuldNotitie"></textarea>
<input type="submit" name="clientNotitie" value="Notitie opslaan">
</form>
<form action="test.php" method="post" id="notitieForm" onsubmit="return notitieOpslaan(this);">
<input type="text" id="clientNotitieDatum" value="2022-10-18" name="clientNotitieDatum" hidden="">
<textarea rows="4" cols="50" id="ingevuldNotitie" name="ingevuldNotitie"></textarea>
<input type="submit" name="clientNotitie" value="Notitie opslaan">
</form>
</div>
</div>
<script>
$(document).on('keyup', "textarea[name='ingevuldNotitie']", function() {
$(this).closest('form').submit();
});

function notitieOpslaan(theForm) {
var clientNotitieDatum = theForm['clientNotitieDatum'].value;
console.log('form would have been submitted', clientNotitieDatum);
return false;
}  
</script>