How to make a specific option unselectable program

2019-06-17 21:46发布

站内问答 / jQuery
1090 2 6

I have a select with several options and I try to make some of the options unselectable programmatically. For instance, my code is :

<select>
  <option value="1">Value 1</option>
  <option value="2">Value 2</option>
  <option value="3">Value 3</option>
</select>
<script>
  $('select').selectize();
</script>

My question is: how can I make to get option "2" disabled (i.e. not displaying and not selectable) programmatically? -- I tried this code...

$('select')[0].selectize.$dropdown_content.find('[data-value="2"]').removeAttr('data-selectable');

... but it does not work (when I inspect the DOM I see that option "2" has no 'data-selectable' attribute, but it still renders and is selectable...).

Am I wrong here? And if so: what is the proper way to make an option unselectable (I can't find it anywhere in the doc)?

(I created a jsFiddle here: http://jsfiddle.net/j8YUA/3/)

2条回答
时光不老，我们不散
2楼-- · 2019-06-17 22:28

Selectize options are stored in object $('select')[0].selectize.options, so to delete an option you should delete respective property from options object

 delete $('select')[0].selectize.options["2"];
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家丑人穷心不美
3楼-- · 2019-06-17 22:33

You can use the disabledField setting to make a selectize option "unselectable" programmatically when rendering the options. You can also make an option "unselectable" after the fact using the updateOption method (or you can simply remove the option using the removeOption method) For example:

const options = [
  {name: 'Option 1', disable: false},
  {name: 'Option 2', disable: true}
  ];

const sel = $('#select1').selectize({
  options: options,
  valueField: 'name',
  labelField: 'name',
  searchField: ['name'],
  disabledField: 'disable'
});

$('#button1').click(() => {
  sel[0].selectize.updateOption('Option 1', {name: 'Option 1', disable: true});
});

$('#button2').click(() => {
  sel[0].selectize.removeOption('Option 2');
});
<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Selectize</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.12.6/css/selectize.default.min.css">
  </head>

  <body>

    <div>Option 2 disabled</div>
    <input id="select1" name="select1" type="text" />
    <button id="button1">Disable Option 1</button>
    <button id="button2">Remove Option 2</button>
    
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.12.6/js/standalone/selectize.js"></script>

  </body>

</html>

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