Asynchronous SmartCode in VWO – VWO

Asynchronous VWO code loads in parallel to your webpage code and does not affect the loading time of your website. You can set the time for which the asynchronous script will wait for the page settings to load, using the variable settings_tolerance. If the page settings load within this time interval, the code requests the VWO library (va.js or vanj.js) from our CDN and waits for the file to load at the interval indicated by the variable library_tolerance else the VWO code on the page will show the control version (original version) instead.

You have the option to use the jQuery of your webpage instead of the VWO’s jQuery. This typically depends on the jQuery version of your webpage. If the jQuery version of your webpage is similar or higher than the one used by VWO, your page can use its own jQuery. Currently, the jQuery version used by VWO is 1.4.2.

NOTE: As of now, the supported jQuery versions range from 1.4.2 to 2.x.x. If you are already using jQuery on your webpage, and the version is in the specified range, we recommend you to use the no Jquery version as it would reduce the required bandwidth and would work faster.

INFO: If your account ID is higher than or equal to 460038, we do not serve you with the jQuery version 1.4.2. Instead, we serve you with a customized version that is five times smaller. We did this to ensure that your website remains performant enough while using VWO. Please read this blog to see what we did for this.

Accounts with IDs lower than the one specified above are unaffected and will continue to function normally.

To convert the VWO jQuery code snippet into a non-jQuery code snippet, set use_existing_jquery to true in your SmartCode.

NOTE: To learn about using VWO for SPA's, refer to How to Use VWO for Single Page Applications.

The Workflow of Asynchronous SmartCode in VWO

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The Workflow of Asynchronous SmartCode in VWO

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