I'm trying to loop form to check for empty field and then execute and function. I'm currently using something like this below that I found on this website but what is happening that the each loop check 1 field and see 1 that not empty and still execute else function. I think I need to check all at once then execute next function. How could I achieve this?
if($('.enter-info--ownerInfo .req').val() != "") {
alert("Empty Fields!!")
} else {
run this function
}
Thanks...
Use filtering , it is easy:
var anyFieldIsEmpty = $("form :input").filter(function() {
return $.trim(this.value).length === 0;
}).length > 0;
if (anyFieldIsEmpty) {
// empty fields
}
$('.enter-info--ownerInfo .req').each(function() {
if ($(this).val() == "")
{
alert("empty field : " + $(this).attr('id'));
}
});
Start by selecting all your fields:
var fields = $('.enter-info--ownerInfo .req')
Then filter them down to the ones with an empty value:
fields.filter(function() {
return this.value === '';
});
Then check the length
property of the resulting object. If it's equal to 0
then all fields have a value, otherwise you execute your function.
if(fields.length === 0) {
// no empty fields
}
else {
// empty fields
}
You can use a loop and flag:
var valid = true;
$('.req').each(function () {
if ($(this).val() == '') {
valid = false;
return false;
}
});
if (valid) {
// all fields are valid
}
You can use .filter
method to reduce the elements to those matching your criteria:
if $('.enter-info--ownerInfo .req').filter(function () {
return $.trim($(this).val()) == ""
}).length > 0) {
alert("One or more fields are empty")
} else {
// run this function
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.