Title: Lots of Javascript errors Last modified: September 12, 2016 --- # Lots of Javascript errors * Resolved [Richard Vencu](https://wordpress.org/support/users/rvencu/) * (@rvencu) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/) * Hi, since Loco Translate v2 I really cannot use this plugin properly anymore… * When I activate v2 I get javascript errors when I try to save the work done or sync. The error says prototype.js?ver=1.7.1:845 Uncaught TypeError: this._each is not a function * Then if I switch back to v1.x version I get different errors, for instance I cannot search/filter the translation/translated phrases. Luckily I can save mo and po files in this version. I waited to see improvements over new versions but I seem to be stuck on this. I had to move my translation work on external Poedit software and perform ftp uploads manually. Not a bad thing since I discovered the latest Poedit software notifies on translation problems (for instance the count of missing %s and other variables present in original strings). This would be nice to have on Loco plugin as well. Viewing 11 replies - 1 through 11 (of 11 total) * Plugin Author [Tim W](https://wordpress.org/support/users/timwhitlock/) * (@timwhitlock) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177046) * My plugin does not use `prototype.js` so I don’t know how this error could be coming from my JavaScript. If you know differently, please elaborate. * Regarding additional editor features such as formatting tokens. These are planned for future development. Thanks for confirming the need for them. * Thread Starter [Richard Vencu](https://wordpress.org/support/users/rvencu/) * (@rvencu) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177074) * Hm. This is the chain * ``` prototype.js?ver=1.7.1:845 Uncaught TypeError: this._each is not a function each @ prototype.js?ver=1.7.1:845 m.register.d.clear @ admin.js?ver=2.0.6:88 k @ admin.js?ver=2.0.6:90 m.register.d.post @ admin.js?ver=2.0.6:92 doSyncAction @ editor.js?ver=2.0.6:77 (anonymous function) @ editor.js?ver=2.0.6:204 dispatch @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=9ff1ced…:3 r.handle @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils&ver=9ff1ced…:3 ``` * So prototype.js is called from admin.js that is part of your plugin. I do not know why it does this call. - This reply was modified 9 years, 8 months ago by [Richard Vencu](https://wordpress.org/support/users/rvencu/). Reason: cleaner code * Plugin Author [Tim W](https://wordpress.org/support/users/timwhitlock/) * (@timwhitlock) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177091) * It can’t be called directly. My Js only calls jQuery directly. * I notice that the current version of WordPress doesn’t include a file called prototype.js, so my guess is that this file is included by some other plugin and is messing things up. something with a version number of 1.7.1 by the looks of it. Can you see what plugin this is? or perhaps your theme? * Thread Starter [Richard Vencu](https://wordpress.org/support/users/rvencu/) * (@rvencu) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177129) * I see that prototype.js is loading automatically from [https://ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js?ver=1.7.1](https://ajax.googleapis.com/ajax/libs/prototype/1.7.1.0/prototype.js?ver=1.7.1) * Chrome dev tools says the initiator of this download is [https://www.dentfix.ro/wp-admin/admin.php?path=plugins%2Floco-translate%2Fold%2Flanguages%2Floco-translate-pl_PL.po&bundle=loco-translate%2Floco.php&domain=loco-translate&page=loco-plugin&action=file-edit](https://www.dentfix.ro/wp-admin/admin.php?path=plugins%2Floco-translate%2Fold%2Flanguages%2Floco-translate-pl_PL.po&bundle=loco-translate%2Floco.php&domain=loco-translate&page=loco-plugin&action=file-edit) and that would be the admin page I am on… * Plugin Author [Tim W](https://wordpress.org/support/users/timwhitlock/) * (@timwhitlock) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177171) * Ok, I can see that WordPress will add this script from the remote source, but for whatever reason my admin pages don’t include it. What version of WordPress are you running? * The apparently offending line 88 of admin.js includes a standard `for` loop. I am clueless as to how this ends up calling the `each` function in prototype. js * Although the admin.js code is compressed I could debug it, but I’ll need to reproduce the error and currently I cannot. We need to establish why your admin pages are loading Prototype and mine are not. * Plugin Author [Tim W](https://wordpress.org/support/users/timwhitlock/) * (@timwhitlock) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177190) * Ah. I can reproduce it by forcing WordPress to include prototype.js. * Looking into a fix for this conflict… * Thread Starter [Richard Vencu](https://wordpress.org/support/users/rvencu/) * (@rvencu) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177213) * I downloaded the entire plugins folder and themes folder in order to fileseek“ prototype.js” against all plugin files. No result. Perhaps your finding is correct. * In my multisite installation (I run some common and some different plugins on each site) the issue appears only on one site. So it could be something related to the theme. * Thread Starter [Richard Vencu](https://wordpress.org/support/users/rvencu/) * (@rvencu) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177221) * I use WordPress 4.6.1 – it is specified on the left sidebar of this thread since it is a required info to start a support topic * Plugin Author [Tim W](https://wordpress.org/support/users/timwhitlock/) * (@timwhitlock) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177238) * … - This reply was modified 9 years, 8 months ago by [Tim W](https://wordpress.org/support/users/timwhitlock/). Reason: accidentally posted twice * Plugin Author [Tim W](https://wordpress.org/support/users/timwhitlock/) * (@timwhitlock) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177240) * Fixed it. * The issue was that prototype.js (included as a dependency of something else you’re running) alters the Array prototype by adding methods to it. These show up during` for..in` iteration, hence breaking my code. * I’ve change the iteration to use the numerical form, which fixed the conflict. This is in the current development version `2.0.7-dev` [https://localise.biz/wordpress/plugin/developers](https://localise.biz/wordpress/plugin/developers) * Thread Starter [Richard Vencu](https://wordpress.org/support/users/rvencu/) * (@rvencu) * [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177298) * Great Viewing 11 replies - 1 through 11 (of 11 total) The topic ‘Lots of Javascript errors’ is closed to new replies. * ![](https://ps.w.org/loco-translate/assets/icon-256x256.png?rev=1000676) * [Loco Translate](https://wordpress.org/plugins/loco-translate/) * [Frequently Asked Questions](https://wordpress.org/plugins/loco-translate/#faq) * [Support Threads](https://wordpress.org/support/plugin/loco-translate/) * [Active Topics](https://wordpress.org/support/plugin/loco-translate/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/loco-translate/unresolved/) * [Reviews](https://wordpress.org/support/plugin/loco-translate/reviews/) ## Tags * [javascript errors](https://wordpress.org/support/topic-tag/javascript-errors/) * 11 replies * 2 participants * Last reply from: [Richard Vencu](https://wordpress.org/support/users/rvencu/) * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/lots-of-javascript-errors/#post-8177298) * Status: resolved