Title: Avoid using old JavaScript in modern browsers
Last modified: September 28, 2021

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# Avoid using old JavaScript in modern browsers

 *  [Ocio132](https://wordpress.org/support/users/ocio132/)
 * (@ocio132)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/avoid-using-old-javascript-in-modern-browsers/)
 * hello good I get this warning when installing the plugin
    Avoid using old JavaScript
   in modern browsers [https://developers.google.com/speed/pagespeed/insights/?hl=es&url=https%3A%2F%2Fmarcosocio.com%2F](https://developers.google.com/speed/pagespeed/insights/?hl=es&url=https%3A%2F%2Fmarcosocio.com%2F)
   [https://ibb.co/VwZFRty](https://ibb.co/VwZFRty) [https://philipwalton.com/articles/deploying-es2015-code-in-production-today/](https://philipwalton.com/articles/deploying-es2015-code-in-production-today/)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Favoid-using-old-javascript-in-modern-browsers%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Aleksandr Guidrevitch](https://wordpress.org/support/users/aguidrevitch/)
 * (@aguidrevitch)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/avoid-using-old-javascript-in-modern-browsers/#post-14919681)
 * Hi [@ocio132](https://wordpress.org/support/users/ocio132/) ,
 * Thanks of reporting, I’m already aware of that and I’m thinking on how to implement
   it properly, without hurting old browsers.
 *  Thread Starter [Ocio132](https://wordpress.org/support/users/ocio132/)
 * (@ocio132)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/avoid-using-old-javascript-in-modern-browsers/#post-14920373)
 * to perfect by the way I love your plugin
 *  Plugin Author [Aleksandr Guidrevitch](https://wordpress.org/support/users/aguidrevitch/)
 * (@aguidrevitch)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/avoid-using-old-javascript-in-modern-browsers/#post-14920555)
 * Thanks!
 * Hopefully, this issue will be addressed in the upcoming release.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Avoid using old JavaScript in modern browsers’ is closed to new replies.

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## Tags

 * [js](https://wordpress.org/support/topic-tag/js/)

 * 3 replies
 * 2 participants
 * Last reply from: [Aleksandr Guidrevitch](https://wordpress.org/support/users/aguidrevitch/)
 * Last activity: [4 years, 8 months ago](https://wordpress.org/support/topic/avoid-using-old-javascript-in-modern-browsers/#post-14920555)
 * Status: not resolved