Title: plugin incompatibility with most browser detection plugins
Last modified: August 21, 2016

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# plugin incompatibility with most browser detection plugins

 *  Resolved [rm65454](https://wordpress.org/support/users/rm65454/)
 * (@rm65454)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/)
 * Hi Mike,
 * So I have been using your plugins for almost the 6-8 months.
 * One thing I noticed that none of the browser detection plugins worked with my
   website.
 * I kept trying quite a few of them but almost always blamed them for being non
   functional.
 * Today I purchased another plugin and since I paid for it I was forced to trouble
   shoot a bit more.
 * Turns out that disabling the jobs-tags plugin makes the browser detection plugin
   display incompatibility errors with older browser.
 * Only problem is that I need the job tags plugin on my website.
 * Could you please debug this?
 * Thanks.
 * [https://wordpress.org/plugins/wp-job-manager/](https://wordpress.org/plugins/wp-job-manager/)

Viewing 9 replies - 1 through 9 (of 9 total)

 *  Plugin Author [Mike Jolley](https://wordpress.org/support/users/mikejolley/)
 * (@mikejolley)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117121)
 * What errors are you seeing? Not sure how a tags plugin would affect other scripts–
   depends how the other plugins load their JS.
 *  Thread Starter [rm65454](https://wordpress.org/support/users/rm65454/)
 * (@rm65454)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117161)
 *     ```
       Webpage error details
   
       User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)
       Timestamp: Mon, 21 Jul 2014 21:48:14 UTC
   
       Message: Object doesn't support this property or method
       Line: 2
       Char: 29694
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/jquery-updater/js/jquery-2.1.1.min.js?ver=2.1.1
   
       Message: 'jQuery' is undefined
       Line: 2
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.2.1
   
       Message: 'jQuery' is undefined
       Line: 13
       Char: 9164
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/woocommerce/assets/js/jquery-blockui/jquery.blockUI.min.js?ver=2.60
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/woocommerce/assets/js/frontend/woocommerce.min.js?ver=2.1.8
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/rhc_ce.js?ver=1.0.3
   
       Message: 'jQuery' is undefined
       Line: 11
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/jquery.ui.touch-punch.min.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 6
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/js/bootstrap.min.js?ver=3.0.0
   
       Message: 'fn' is null or not an object
       Line: 364
       Char: 5
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/js/bootstrap-select.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 9
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/bootstrap-switch.js?ver=1.0.0
   
       Message: 'fn' is null or not an object
       Line: 54
       Char: 3
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/bootstrap-twbutton.js?ver=3.0.0
   
       Message: 'fn' is null or not an object
       Line: 65
       Char: 3
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/flatui-checkbox.js?ver=1.0.0
   
       Message: 'fn' is null or not an object
       Line: 94
       Char: 3
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/flatui-radio.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 17
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/jquery.tagsinput.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 2
       Char: 2
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/jquery.placeholder.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 13
       Char: 2
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/jquery.stacktable.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 39
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/js/jquery.easing.1.3.js?ver=1.3.0
   
       Message: 'jQuery' is undefined
       Line: 13
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/fullcalendar/fullcalendar/fullcalendar.custom.js?ver=1.6.4.5
   
       Message: 'jQuery' is undefined
       Line: 7
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/fullcalendar/fullcalendar/gcal.js?ver=1.6.1.1
   
       Message: 'jQuery' is undefined
       Line: 3
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/js/fullcalendar_custom_views.js?ver=2.9.6.1
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.core.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.widget.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.accordion.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.mouse.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.slider.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.resizable.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.draggable.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.button.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.position.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.dialog.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.tabs.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.sortable.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.droppable.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.datepicker.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.menu.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 4
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-includes/js/jquery/ui/jquery.ui.autocomplete.min.js?ver=1.10.4
   
       Message: 'jQuery' is undefined
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/calendarize-it/js/calendarize.js?ver=2.9.3.2
   
       Message: 'undefined' is null or not an object
       Line: 38
       Char: 5
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/jquery.iframe-transport.js?ver=1.0.0
   
       Message: 'support' is null or not an object
       Line: 32
       Char: 5
       Code: 0
       URI: https://www.mywebsite.com/wp-content/uploads/calendarize-it/calendarize-it-community-events/js/jquery.fileupload.js?ver=1.0.0
   
       Message: 'jQuery' is undefined
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/themes/jobify/js/vendor.min.js?ver=3.9
   
       Message: 'jQuery' is undefined
       Line: 1
       Char: 15
       Code: 0
       URI: https://www.mywebsite.com/wp-content/themes/jobify/js/jobify.min.js?ver=20130718
   
       Message: 'jQuery' is undefined
       Line: 137
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/
   
       Message: Object expected
       Line: 1068
       Char: 5
       Code: 0
       URI: https://www.mywebsite.com/
   
       Message: Object doesn't support this property or method
       Line: 1
       Char: 4252
       Code: 0
       URI: https://widget.purechat.com/VisitorWidget/WidgetScript
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/auto-location-pro/js/auto-location-styles.js?ver=1.0
   
       Message: 'jQuery' is undefined
       Line: 7
       Char: 17
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/woocommerce/assets/js/jquery-cookie/jquery.cookie.min.js?ver=1.3.1
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/woocommerce/assets/js/frontend/cart-fragments.min.js?ver=2.1.8
   
       Message: 'isArray' is null or not an object
       Line: 9
       Char: 5
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/wpjm-job-suggest/js/typeahead.js?ver=3.9
   
       Message: 'jQuery' is undefined
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/wpjm-job-suggest/js/wp-typeahead.js?ver=3.9
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/wpjm-job-suggest/js/style-scanner.js?ver=3.9
   
       Message: 'jQuery' is undefined
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/jetpack/modules/wpgroho.js?ver=3.9
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/wp-job-manager/assets/js/ajax-filters.min.js?ver=1.9.3
   
       Message: Object expected
       Line: 1
       Char: 1
       Code: 0
       URI: https://www.mywebsite.com/wp-content/plugins/wp-job-manager-tags/assets/js/tag-filter.js?ver=1.0
       ```
   
 *  Thread Starter [rm65454](https://wordpress.org/support/users/rm65454/)
 * (@rm65454)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117162)
 * somehow deactivating the wp-job-manager-tags takes care of the problem.
 *  Plugin Author [Mike Jolley](https://wordpress.org/support/users/mikejolley/)
 * (@mikejolley)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117233)
 * I really don’t see why – this is the only script related line in the plugin:
 *     ```
       wp_enqueue_script( 'wp-job-manager-ajax-tag-filters', JOB_MANAGER_TAGS_PLUGIN_URL . '/assets/js/tag-filter.js', array( 'jquery' ), '1.0', true );
       ```
   
 * Looking at the error log you posted, all of those errors are from plugins stating
   that jQuery is missing. IS the browser script itself loading jquery itself, breaking
   all other scripts do you think?
 *  Thread Starter [rm65454](https://wordpress.org/support/users/rm65454/)
 * (@rm65454)
 * [11 years, 10 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117242)
 * This problem is from old browsers such as IE 7 and 8.
 * I am trying to give users an error so they can upgrade their browser, so far 
   no luck. all these plugins are unable to load cause of one issue or another.
 *  Plugin Author [Mike Jolley](https://wordpress.org/support/users/mikejolley/)
 * (@mikejolley)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117295)
 * Can you show me/tell me what browser plugin you’re using – I want to take a look
   at the source.
 *  Thread Starter [rm65454](https://wordpress.org/support/users/rm65454/)
 * (@rm65454)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117312)
 * I can email you a copy to test at your email.
 *  Thread Starter [rm65454](https://wordpress.org/support/users/rm65454/)
 * (@rm65454)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117313)
 * its called warning old browser wordpress plugin.
 *  Plugin Author [Mike Jolley](https://wordpress.org/support/users/mikejolley/)
 * (@mikejolley)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117324)
 * Dealing with this off-site rather than here.

Viewing 9 replies - 1 through 9 (of 9 total)

The topic ‘plugin incompatibility with most browser detection plugins’ is closed
to new replies.

 * ![](https://ps.w.org/wp-job-manager/assets/icon-256x256.gif?rev=2975257)
 * [WP Job Manager](https://wordpress.org/plugins/wp-job-manager/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-job-manager/#faq)
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 * [Reviews](https://wordpress.org/support/plugin/wp-job-manager/reviews/)

 * 9 replies
 * 2 participants
 * Last reply from: [Mike Jolley](https://wordpress.org/support/users/mikejolley/)
 * Last activity: [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-incompatibility-with-most-browser-detection-plugins/#post-5117324)
 * Status: resolved