[英]Disable select input if option value exists
I want to disable the select box if Free Shipping is available. 如果有免费送货,我想禁用选择框。
<select name="shipping_method" id="shipping_method">
<option value="">Select shipping</option>
<option value="free_shipping">Free Shipping</option>
<option value="international_delivery">International: $30.00</option>
</select>
I've tried this (without knowing if it would work): 我试过这个(不知道它是否会起作用):
$(document).ready(function(){
if($("option").val() == "free_shipping") {
$("select").prop("disabled");
}
});
And then assuming on form submit: 然后假设在表单提交:
$(document).ready(function(){
$("form").submit(function() {
$("select", this).prop("disabled", false);
});
});
select the select 选择选择
$('#shipping_method').change(function(){
var j = $(this);
if(j.val() == 'free_shipping') {
j.attr('disabled', true);
}
else {
j.removeAttr('disabled');
}
}).trigger('change');
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