admin管理员组文章数量:1415111
This has probably been answered, but I am unable to find the answered question anywhere...
Assuming we have the following HTML...
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Dropdown Test</title>
</head>
<body>
<select name="myDropDownListName" id="myDropDownListID" class="dropdown">
<option selected="selected" value="0">Please select a value...</option>
<option value="1">My Custom Value 1</option>
<option value="2">My Custom Value 2</option>
<option value="3">My Custom Value 3</option>
</select>
</body>
</html>
What would the JQuery mand look like to set 'My Custom value 2' to be the currently selected option in the dropdown list box, assuming I do not know the index 'value' value, and can only identify the item by the text 'My Custom Value 2'?
This has probably been answered, but I am unable to find the answered question anywhere...
Assuming we have the following HTML...
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Dropdown Test</title>
</head>
<body>
<select name="myDropDownListName" id="myDropDownListID" class="dropdown">
<option selected="selected" value="0">Please select a value...</option>
<option value="1">My Custom Value 1</option>
<option value="2">My Custom Value 2</option>
<option value="3">My Custom Value 3</option>
</select>
</body>
</html>
What would the JQuery mand look like to set 'My Custom value 2' to be the currently selected option in the dropdown list box, assuming I do not know the index 'value' value, and can only identify the item by the text 'My Custom Value 2'?
Share Improve this question asked Dec 15, 2014 at 20:07 barrypickerbarrypicker 10.1k12 gold badges67 silver badges83 bronze badges 3- This will help you link to get the value. – Gaurav Kalyan Commented Dec 15, 2014 at 20:11
- possible duplicate of jquery : How to select an option by its text? – haxtbh Commented Dec 15, 2014 at 20:12
- Answered here: stackoverflow./questions/17856523/… – vapcguy Commented Nov 8, 2021 at 17:41
5 Answers
Reset to default 5You can use jquery .filter():
$('#myDropDownListID option').filter(function() {
//you can use this.innerText too
return $(this).text() === 'My Custom Value 2';
}).prop('selected', true);
<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="myDropDownListName" id="myDropDownListID" class="dropdown">
<option selected="selected" value="0">Please select a value...</option>
<option value="1">My Custom Value 1</option>
<option value="2">My Custom Value 2</option>
<option value="3">My Custom Value 3</option>
</select>
Simply like this :
$('select').val($("select option:contains('My custom Value 2')").val());
Another way... use the contains selector to search for a DOM elem by its content.
$('select>option:contains("My Custom Value 2")').prop('selected', true);
People like to say to use .val()
, but as you noticed, it doesn't like to set by text, but by using the index, instead. So you should do a find
to get that, then set by it. But even that is only part of the story. You should first deselect all other options, and set the attribute of the option you want as selected
using the index that you find.
Btw, I hate the $('#myDropDownListID')
syntax because it is useless in SharePoint because it auto-generates GUIDs and puts them after the IDs, forcing you to have to grab it with $('[id*=myDropDownListID]')
, with the *
indicating that it contains
that value, so that is how I will set this up, except I'll leave out the *
because it's unnecessary in this case. But this syntax is also very useful if you want to use $
instead of *
to say it starts with
that value, and you can use title
or name
instead of id
, so it is incredibly versatile, and I wish more people used it.
$(document).ready(function() {
var yourText = "My Custom Value 2";
// Remove all 'selected' attributes from all options
$('select[id="myDropDownListID"] option').removeAttr('selected');
// Get the index for the value you want to set
var idx = $('select[id="myDropDownListID"] option').filter(function() {
return $(this).html() == yourText;
}).val();
// Set the dropdown value by index and set it as selected by text
var dropdownBox = $('select[id="myDropDownListID"]');
dropdownBox.val(idx);
dropdownBox.find('option[value="' + yourValue + '"]').attr('selected','selected'); // note that .val() doesn't do this
dropdownBox.click(); // may be useful and necessary for certain engines to cache the value appropriately
console.log(dropdownBox.html()); // should show you that the selected option is My Custom Value 2
console.log(dropdownBox.val()); // should give you the index 2
});
<script src="https://ajax.googleapis./ajax/libs/jquery/1.2.3/jquery.min.js"></script>
<select id="myDropDownListID">
<option value="1">My Custom Value 1</option>
<option value="2">My Custom Value 2</option>
<option value="3">My Custom Value 3</option>
</select>
ddlListItems is ID of ListBox
if ($('#ddlListItems option:selected').text() == 'My Custom Value 2') {
var itemsByValue = $('#ddlListItems option:selected').text();
}
本文标签:
版权声明:本文标题:javascript - JQuery set dropdown list box selected option - not by value, but by display text - Stack Overflow 内容由网友自发贡献,该文观点仅代表作者本人, 转载请联系作者并注明出处:http://www.betaflare.com/web/1745207984a2647730.html, 本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容,一经查实,本站将立刻删除。
发表评论