jQuery how to select options by values?
How to select options which are not in 'restrictedIds', for example, selector should select the options with values 24 and 31. Also I know how it could be done with using 开发者_JS百科'.inArray' and '.each()' but it would be good to look at yours solutions. Thank you.
...
var restrictedIds='0,38,23';
...
<select class="text4" size="1" name="drivers">
<option value="0"></option>
<option value="24">test1</option>
<option value="31">test2</option>
<option value="38">test3</option>
<option value="23">test4</option>
</select>
You should take a look at these articles:
http://api.jquery.com/attribute-equals-selector/
http://api.jquery.com/attribute-not-equal-selector/
http://api.jquery.com/multiple-attribute-selector/
What you can do is select only options from whitelist, i.e.
$('option[value=24],option[value=31]')
But I'm not sure if this is faster than .each()..
You can use .filter. For better performance I suggest to create a map of IDs:
var restrictedIds = {
0: true,
28: true,
23: true
};
var options = $('select[name="drivers"] option').filter(function() {
return !restrictedIds[this.value];
//or !(this.value in restrictedIds)
});
The simplest thing to do is use the val function http://api.jquery.com/val/. It has support to read and write values to select having multiple options.
Here is an example that may work for you.
<!DOCTYPE html>
<html>
<head>
<style>
p { color:red; margin:4px; }
b { color:blue; }
</style>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<p></p>
<select id="single">
<option>Single</option>
<option>Single2</option>
</select>
<select id="multiple" multiple="multiple">
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
</select>
<script>
function displayVals() {
$("#multiple").val([1,3]);
var singleValues = $("#single").val();
var multipleValues = $("#multiple").val() || [];
$("p").html("<b>Single:</b> " +
singleValues +
" <b>Multiple:</b> " +
multipleValues.join(", "));
}
$("select").change(displayVals);
displayVals();
</script>
</body>
</html>
加载中,请稍侯......
精彩评论