https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined Gravity Support Forums Topic: Field type 'Calculation' - TypeError: expr is undefined en-US Sat, 04 Apr 2026 08:02:57 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined#post-78666 Wed, 03 Oct 2012 10:08:22 +0000 Chris Hajer 78666@https://legacy.forums.gravityhelp.com/ <p>As Rob explained, you have an error in your formula. You have mismatched parentheses. I think you want to do something like this:</p> <pre><code>[php] {Je wilt::8} * 0.35</code></pre> <p>or<br /> <pre><code>[php] ( {Je wilt::8} / 100 ) * 35</code></pre> <p>I'm not certain what your calculation should be, so I am unsure of there the parentheses need to be. One of those two formulas should work for you. </p> https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined#post-78612 Wed, 03 Oct 2012 05:44:51 +0000 innovitit 78612@https://legacy.forums.gravityhelp.com/ <p>This is not a paste error. It is the code we use in the form. </p> https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined#post-78399 Mon, 01 Oct 2012 20:28:28 +0000 Chris Hajer 78399@https://legacy.forums.gravityhelp.com/ <p>Did you check your calculation for the proper syntax? From what you posted here you are missing a parenthesis in the calculation for field 27. Is that a paste error here or is your actual formula incorrect? </p> https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined#post-78369 Mon, 01 Oct 2012 16:26:25 +0000 innovitit 78369@https://legacy.forums.gravityhelp.com/ <p>We have a link to the live form with the Calculation forms: <a href="https://cdaformulieren.nl/cdja/congres/" rel="nofollow">https://cdaformulieren.nl/cdja/congres/</a> </p> https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined#post-77915 Fri, 28 Sep 2012 11:45:13 +0000 Rob Harrell 77915@https://legacy.forums.gravityhelp.com/ <p>Your calculation looks to be missing a "(" or you have an extra ")" in it.</p> <p>Does the form show and work in the form builder preview window? Do you have a link to the live form? </p> https://legacy.forums.gravityhelp.com/topic/field-type-calculation-typeerror-expr-is-undefined#post-77890 Fri, 28 Sep 2012 09:05:28 +0000 pronamic 77890@https://legacy.forums.gravityhelp.com/ <p>We have an Gravity Forms form with two 'Calculation' product fields.</p> <p>Veld ID 27 - Product - Calculation<br /> ( {Je wilt::8} ) / 100 ) * 35</p> <p>Veld ID 28 - Product - Calculation<br /> {payment_amount} - {payment_amount}</p> <p>This results however in an blank page, the form is hidden. We see the following error in Firebug:</p> <p>TypeError: expr is undefined<br /> /wp-content/plugins/gravityforms/js/gravityforms.js?ver=1.6.7<br /> Line 847</p> <p>Any idea how we can fix this? </p>