Title: Javascript errors in 2.3.4 break functionality in IE11
Last modified: August 23, 2018

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# Javascript errors in 2.3.4 break functionality in IE11

 *  [tracyfloyd](https://wordpress.org/support/users/tracyfloyd/)
 * (@tracyfloyd)
 * [7 years, 9 months ago](https://wordpress.org/support/topic/javascript-errors-in-2-3-4-break-functionality-in-ie11/)
 * I noticed that the latest version of the plugin (2.3.4) is throwing a javascript
   error:
    “Object doesn’t support property or method ‘find'”
 * I was able to get around this by adding a polyfill for find ([https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find))
   but then it began throwing a similar error for parseInt.
 * Reverting back to 2.3.0 got it working in IE 11 again.
 * We all hate supporting older browsers but many financial institutions are stuck
   on older versions of IE (IE 11 in my client’s case) due to internal systems etc.,
   so given the nature of this plugin, it would prob be a good idea to either mention
   IE compatibility on the plugin page or make note of it in the release notes when
   a breaking update is released.
    -  This topic was modified 7 years, 9 months ago by [tracyfloyd](https://wordpress.org/support/users/tracyfloyd/).

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [conradhake](https://wordpress.org/support/users/conradhake/)
 * (@conradhake)
 * [7 years, 8 months ago](https://wordpress.org/support/topic/javascript-errors-in-2-3-4-break-functionality-in-ie11/#post-10746849)
 * I’m having the same issue with a bank client. How can I revert back to v2.3.0?
 *  Thread Starter [tracyfloyd](https://wordpress.org/support/users/tracyfloyd/)
 * (@tracyfloyd)
 * [7 years, 8 months ago](https://wordpress.org/support/topic/javascript-errors-in-2-3-4-break-functionality-in-ie11/#post-10747016)
 * [@conradhake](https://wordpress.org/support/users/conradhake/) – you should be
   able to click on “Advanced View” in the right column on the main plugin page (
   [https://wordpress.org/plugins/responsive-mortgage-calculator/](https://wordpress.org/plugins/responsive-mortgage-calculator/))
   and scroll to the bottom where you should see a “Previous Versions” section.
 *  [marvelcreative](https://wordpress.org/support/users/marvelcreative/)
 * (@marvelcreative)
 * [7 years, 6 months ago](https://wordpress.org/support/topic/javascript-errors-in-2-3-4-break-functionality-in-ie11/#post-10920914)
 * Hi, I’m also getting the error: “Object doesn’t support property or method parseInt”
   in IE11.
 * I tried reverting back to v2.3.0 but it still doesn’t work for me 🙁
 *  [c_lawlz](https://wordpress.org/support/users/c_lawlz/)
 * (@c_lawlz)
 * [7 years, 5 months ago](https://wordpress.org/support/topic/javascript-errors-in-2-3-4-break-functionality-in-ie11/#post-10976068)
 * Hello, I can confirm that version 2.3.0 has resolved the issue for me. If at 
   launch QA we run into this again I will update.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Javascript errors in 2.3.4 break functionality in IE11’ is closed to 
new replies.

 * ![](https://ps.w.org/responsive-mortgage-calculator/assets/icon-256x256.png?rev
   =1920811)
 * [Responsive Mortgage Calculator](https://wordpress.org/plugins/responsive-mortgage-calculator/)
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 * 4 replies
 * 4 participants
 * Last reply from: [c_lawlz](https://wordpress.org/support/users/c_lawlz/)
 * Last activity: [7 years, 5 months ago](https://wordpress.org/support/topic/javascript-errors-in-2-3-4-break-functionality-in-ie11/#post-10976068)
 * Status: not resolved