jQuery append if defined

Question

How would I make this append only if telephone exists and skip if telephone doesn't exist

for (var i in data.businesses) {
    $('body').append( "<p>" + data.businesses[i].telephone + "</p>");
}

possible duplicate of [Is there an "exists" function for jQuery?](http://stackoverflow.com/questions/31044/is-there-an-exists-function-for-jquery) — m.edmondson, Apr 21 '13 at 15:41
You know about `if`/`else` statements I presume? Are you really asking then, ["How do I check to see if an object has a property in Javascript?"](http://stackoverflow.com/questions/135448/how-do-i-check-to-see-if-an-object-has-a-property-in-javascript) Or you may be tripping up because of `for..in` use. See http://stackoverflow.com/questions/500504/why-is-using-for-in-with-array-iteration-such-a-bad-idea — Crescent Fresh, Apr 21 '13 at 15:41
[This is a nice article for checking the existence of a property.](http://www.nczonline.net/blog/2010/07/27/determining-if-an-object-property-exists/) — The Alpha, Apr 21 '13 at 15:55

score 1 · Accepted Answer · answered Apr 21 '13 at 15:42

1

Try

$.each(data.businesses, function(index, business){
    if(business.telephone){
        $('body').append( "<p>" + business.telephone + "</p>");
    }
});

answered Apr 21 '13 at 15:42

Arun P Johny

384,651
66
527
531

Harry Bomrah · Answer 2 · 2013-04-21T15:52:43.730

1

for (var i in data.businesses) {
    if(data.businesses[i].telephone)
        $('body').append( "<p>" + data.businesses[i].telephone + "</p>");
 }

edited Apr 21 '13 at 15:52

answered Apr 21 '13 at 15:45

Harry Bomrah

1,658
1
11
14

score 0 · Answer 3 · edited Apr 21 '13 at 16:01

0

Try this:

for (var i in data.businesses) {
    if(data.businesses[i].telephone  !== null and data.businesses[i].telephone !== undefined) {
        $('body').append( "<p>" + data.businesses[i].telephone + "</p>");
    }
}

edited Apr 21 '13 at 16:01

Jesse

8,605
7
47
57

answered Apr 21 '13 at 15:42

[This is a nice article for checking the existence of a property.](http://www.nczonline.net/blog/2010/07/27/determining-if-an-object-property-exists/) – The Alpha Apr 21 '13 at 15:54

jQuery append if defined

3 Answers3