jQuery check if any text input has value

Question

I want to ask if there's a better way in jQuery to select multiple text input then check if any of them has a value. Here's my code:

if ($("#reference").val() != "" || $("#pin").val() != "" || $("#fName").val() != "" || $("#mName").val() != "" || $("#datepicker").val() != "") { /*logic goes here */ }

Answer 1

You could do like below:

if ($("#reference,#pin,#fName,#mName,#datepicker").filter(function() { return $(this).val(); }).length > 0) {
  //..
}

Using a common function like the following would make it reusable:

function hasValue(elem) {
    return $(elem).filter(function() { return $(this).val(); }).length > 0;
}

And you could call it like this:

hasValue("#my-input-id");

Answer 2

Try jQuery each()

 $('input[type=text]').each(function(){
     var text_value=$(this).val();
     if(text_value!='')
       {
        console.log('Value exist');
        }

   })

Answer 3

The problem with getting the length property on filter() is that jQuery will evaluate every single element in the collection, just to populate a count when all we care about is whether the value is greater than zero.

None of the current answers and even jQuery's own .is() , .has() , and .filter() make use of short circuiting as soon as the criteria is met.

You can define a simple extension method called .any() like this:

jQuery.fn.any = function(filter){ 
    for (i=0 ; i<this.length ; i++) {
     if (filter.call(this[i])) return true;
  }
  return false;
};

And then pass in a filtering function like this:

var someInputsEmpty = $("#reference,#pin,#fName,#mName,#datepicker").any(function() { 
    return this.value == '';
});

 jQuery.fn.any = function(filter){ for (i=0 ; i<this.length ; i++) { if (filter.call(this[i])) return true; } return false; }; $(function() { var gotMatch = $(":input").any(function() { return this.value == 'hi'; }); if (gotMatch) { console.log("Hello to you too!"); } else { console.log("Why don't you say Hi!"); } }) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <input type="text" value=""> <input type="text" value=""> <input type="text" value=""> 

Further Reading:

• Jquery check form to see if any inputs has value
• Is there an "exists" function for jQuery?
• Jquery check form to see if any inputs has value

Answer 4

只要用这个：

if (!$("#id").val().length == 0))

Answer 5

How about:

http://jsfiddle.net/lollero/rr2ss/1/

Another example: http://jsfiddle.net/lollero/rr2ss/12/

$(function() {

    // Check value of each and every input element....
    // Which you can of course change to be more specific, like: $('#myForm input')
    $( "input" ).val(function( i, val ) {

        // Return the console log IF value is not empty
        // value=" " still counts as "not empty", because technically it isn't
        // You could of course replace the console.log(); with anything you'd like
        val && console.log('not empty: input-' + (++i) );

        // Note that you don't have to return val if you don't  want to, it's just for show in this case.
        return val

    });

});