Title: Uncaught SyntaxError Last modified: January 12, 2017 --- # Uncaught SyntaxError * [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * (@dexter_ade) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/) * Hi, Install the plugin on my test site, with the following configuration: * Optimize HTML Code? – enable Keep HTML comments? – enable * Optimize JavaScript Code? – enable Force JavaScript in ? – disable Also aggregate inline JS? – disable Exclude scripts from Autoptimize – seal.js,js/ jquery/jquery.js,/wp-includes/js/jquery/jquery.js Add try-catch wrapping? -disable * The site does not load and I have this error: * Uncaught TypeError: $ is not a function at HTMLDocument. (autoptimize_2e4c88e0c733ed70658922a1e1392cfd. js:21) at j (autoptimize_2e4c88e0c733ed70658922a1e1392cfd.js:3) at Object.fireWith[ as resolveWith] (autoptimize_2e4c88e0c733ed70658922a1e1392cfd.js:3) at Function. ready (autoptimize_2e4c88e0c733ed70658922a1e1392cfd.js:3) at HTMLDocument.J ( autoptimize_2e4c88e0c733ed70658922a1e1392cfd.js:3) autoptimize_2e4c88e0c733ed70658922a1e1392cfd. js:21 Uncaught TypeError: $ is not a function at autoptimize_2e4c88e0c733ed70658922a1e1392cfd. js:21 at dispatch (autoptimize_2e4c88e0c733ed70658922a1e1392cfd.js:4) at r.handle( autoptimize_2e4c88e0c733ed70658922a1e1392cfd.js:4) * Can you help me please? Viewing 9 replies - 1 through 9 (of 9 total) * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8648244) * `$ is not a function` is a jquery-related error which is not uncommon on wordpress, which is why most plugins use jQuery instead of $ … if you can share your URL I’ll see what I can find out. * Thread Starter [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * (@dexter_ade) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8648472) * Hi Frank, this url: [http://trucksandparts.staging.wpengine.com/](http://trucksandparts.staging.wpengine.com/) thank you for you help. * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8649767) * Well, the errors seem to come from JS that originates from wp-content/themes/ trucksparts/js/functions.js, which seems (part of) a custom build theme and that script does not take the WordPress way of doing jQuery (i.e. the fact it loads jQuery in compatibility mode) into account. * As it’s custom built, I would advice you -to ask the developers- to either change all occurences of `$` with `jQuery` in that file or to apply [one of the workarounds discussed in this](https://digwp.com/2011/09/using-instead-of-jquery-in-wordpress/) or [this article](https://premium.wpmudev.org/blog/adding-jquery-scripts-wordpress/). * hope this helps, frank * Thread Starter [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * (@dexter_ade) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8651884) * Hi Frank, thank you for you help, I made the changes to the file wp-content/themes/ trucksparts/js/functions.js and now show this error: * Uncaught TypeError: $ is not a function at HTMLDocument. (autoptimize_90cb36facc0b8b701feda0928c9b3312. js:366) at j (autoptimize_90cb36facc0b8b701feda0928c9b3312.js:3) at Object.fireWith[ as resolveWith] (autoptimize_90cb36facc0b8b701feda0928c9b3312.js:3) at Function. ready (autoptimize_90cb36facc0b8b701feda0928c9b3312.js:3) at HTMLDocument.J ( autoptimize_90cb36facc0b8b701feda0928c9b3312.js:3) * Try searching for the autoptimize.js file to replace $ with jQuey but I did not find it, can you help whith this please. - This reply was modified 9 years, 4 months ago by [dexter_ade](https://wordpress.org/support/users/dexter_ade/). * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8652121) * well, I see this block of inline JS on the unoptimized HP: * ``` $(document).ready(function(){ if($("select#select_1").val()=="Garbage Trucks"){ $("select#select_2").html(refusetrucks); } if($("select#select_1").val()=="Concrete Mixer Trucks"){ $("select#select_2").html(concretetrucks); } if($("select#select_1").val()=="All Other Trucks"){ $("select#select_2").html(othertrucks); } if($("select#select_1").val()=="Trailers"){ $("select#select_2").html(trailers); } if($("select#select_1").val()=="Grapple Trucks"){ $("select#select_2").html(grapple); } //force display of updated selection $("select#select_2").change(); $("select#select_1").on('change',function(){ if($(this).val()=="Garbage Trucks"){ $("select#select_2").html(refusetrucks); }else if($(this).val()=="Concrete Mixer Trucks"){ $("select#select_2").html(concretetrucks); }else if($(this).val()=="All Other Trucks"){ $("select#select_2").html(othertrucks); }else if($(this).val()=="Trailers"){ $("select#select_2").html(trailers); }else if($(this).val()=="Grapple Trucks"){ $("select#select_2").html(grapple); } }); }); ``` * so at least that one, but maybe more? * Thread Starter [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * (@dexter_ade) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8652930) * Frank Thank you, I will continue to review and inform you as I was. * Thread Starter [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * (@dexter_ade) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8660484) * Hello Frank, Happy start of week, I already fix the problems of java script and I have no errors in the log, but now when I want to do the speed test in this url shows me an error: [https://developers.google.com/speed/pagespeed/insights/?url=http%3A%2F%2Ftrucksandparts.staging.wpengine.com%2F&tab=desktop](https://developers.google.com/speed/pagespeed/insights/?url=http%3A%2F%2Ftrucksandparts.staging.wpengine.com%2F&tab=desktop) * However when I disable the “Optimize JavaScript Code?” The page speed does not show any errors, what can be the problem? * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8661549) * Seems like a timeout [@dexter_ade](https://wordpress.org/support/users/dexter_ade/), although the page does load in a browser so it could be a fluke, but it is pretty slow in the browser to. * The main reason is probably that you’re aggregating inline JS. As inline often contains changing variables, it busts the cache leading to a longer load-time and to fast growing cache-sizes. * Other tips & tricks for similar situations; * make sure any of your own JS-files are pre-minified and that the filename end in .min.js or -min.js * optionally switch to the legacy minifiers ([see FAQ](https://wordpress.org/plugins/autoptimize/faq/) for info on how to do that) * optionally exlude one of more JS-files (that don’t end in .min.js or -min.js) from optimization to lighten the minification-load * hope this helps, frank * Thread Starter [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * (@dexter_ade) * [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8664646) * Thanks Frank for your response and your support, I will continue to debug. I hope to solve all those problems. Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Uncaught SyntaxError’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) * 9 replies * 2 participants * Last reply from: [dexter_ade](https://wordpress.org/support/users/dexter_ade/) * Last activity: [9 years, 4 months ago](https://wordpress.org/support/topic/uncaught-syntaxerror-2/#post-8664646) * Status: not resolved