CODEWITHSUNDEEP
javascriptjquery
Head Way
Head Way

Reputation: 323

jquery if statement to check if there is a value of an input otherwise auto populate upon clicking link

I have a simple jQuery statement like so:

$(document).ready(function() {
    $('#ltc_link').click(function() {
        $('#USERDEFINE1').val( 'LT' );
        $('#PHONENIGHT').val( '(111)111-1111' );
        $('#INTERNET').val( 'NONE' );
        $('#last_purchase').val( 'N/A' );
        $('#last_purchase_date').val( 'N/A' );
    });
});

It populates the input fields when the link #ltc_link is clicked.

If there is already text input into one or all of the fields than i don't want the click/link function to overwrite what the user entered. I know in javascript I can do something like so:

if (!third.value) { third.value = '(111)111-1111'; }
if (!fourth.value) { fourth.value = 'NONE'; }
if (!fifth.value) { fifth.value = 'N/A'; }
if (!sixth.value) { sixth.value = 'N/A'; }

Need some help with the jQuery syntax. Thanks in advance.

Upvotes: 3

Views: 214

Answers (1)

David Thomas
David Thomas

Reputation: 253396

I'd suggest the following:

var defaults = {
    USERDEFINE1 : 'LT',
    PHONENIGHT : '(111)111-1111',
    INTERNET : 'NONE',
    last_purchase : 'N/A',
    last_purchase_date : 'N/A'
};
$('#ltc_link').click(function() {
    // selects the elements
    $('#USERDEFINE1, #PHONENIGHT, #INTERNET, #last_purchase, #last_purchase_date').val(
        function(i, v) {
            // checks if the current value 'v' is an empty string,
            // if it is supplies the default value (from the object), if not
            // it sets the value to the current value
            return v == '' ? defaults[this.id] : v;
    });
});

JS Fiddle demo.

References:

Upvotes: 8

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