How to make html <select> element look like

问题:

When I'm disabling a

<select name="sel" disabled>
    <option>123</option>
</select>

element, it doesnt pass its variable.

What to do to look it like disabled, but be in "normal" state?

This is because I have a list of "selects", and sometimes some of them have single value, so user should understand that it has only one value without clicking it.

回答1:

You can keep it disabled as desired, and then remove the disabled attribute before the form is submitted.

$('#myForm').submit(function() {
    $('select').removeAttr('disabled');
});

Note that if you rely on this method, you'll want to disable it programmatically as well, because if JS is disabled or not supported, you'll be stuck with the disabled select.

$(document).ready(function() {
    $('select').attr('disabled', 'disabled');
});

回答2:

<select id="test" name="sel">
  <option disabled>1</option>
  <option disabled>2</option>
</select>   

or you can use jQuery

$("#test option:not(:selected)").prop("disabled", true);

回答3:

My solution was to create a disabled class in CSS:

.disabled {
    pointer-events: none;
    cursor: not-allowed;
}

and then your select would be:

<select name="sel" class="disabled">
    <option>123</option>
</select>

The user would be unable to pick any values but the select value would still be passed on form submission.

回答4:

If you can supply a default value for your selects, then you can use the same approach for unchecked check boxes which requires a hidden input before the actual element, as these don't post a value if left unchecked:

<input type="hidden" name="myfield" value="default" />
<select name="myfield">
    <option value="default" selected="selected">Default</option>
    <option value="othervalue">Other value</option>
    <!-- ... //-->
</select>

This will actually post the value "default" (without quotes, obviously) if the select is disabled by javascript (or jQuery) or even if your code writes the html disabling the element itself with the attribute: disabled="disabled".

回答5:

Add a class .disabled and use this CSS:

​.disabled {border: 1px solid #999; color: #333; opacity: 0.5;}
.disabled option {color: #000; opacity: 1;}​

Demo: http://jsfiddle.net/ZCSRq/

回答6:

One could use an additional hidden input element with the same name and value as that of the disabled list. This will ensure that the value is passed in $_POST variables.

Eg:

<select name="sel" disabled><option>123</select>
<input type="hidden" name="sel" value=123>

回答7:

Wow, I had the same problem, but a line of code resolved my problem. I wrote

$last_child_topic.find( "*" ).prop( "disabled", true );
$last_child_topic.find( "option" ).prop( "disabled", false );   //This seems to work on mine

I send the form to a php script then it prints the correct value for each options while it was "null" before.

Tell me if this works out. I wonder if this only works on mine somehow.

回答8:

if you don't want add the attr disabled can do it programmatically

can disable the edition into the <select class="yourClass"> element with this code:

//bloqueo selects
  //block all selects
  jQuery(document).on("focusin", 'select.yourClass', function (event) {
    var $selectDiabled = jQuery(this).attr('disabled', 'disabled');
    setTimeout(function(){ $selectDiabled.removeAttr("disabled"); }, 30);
  });

if you want try it can see it here: https://jsfiddle.net/9kjqjLyq/