Download Free: A\/B Testing Guide<\/em><\/span><\/a><\/h2>\n\n\nWhat is Asynchronous loading?<\/strong><\/h2>\n\n\nEssentially, instead of loading VWO Smartcode<\/a> and your website, sequentially, asynchronous code will load both in parallel, thereby speeding up your website load. See the following graphic to understand it fully:<\/p>\n\n\n\n![\"the](\"https:\/\/static.wingify.com\/gcp\/uploads\/sites\/3\/2012\/03\/Slide1.jpg\" "\\"Asynchronous")
<\/figure>\n<\/div>\n\nAdvantages of Asynchronous code snippet:<\/strong><\/h2>\n\n\n\n- Much faster website loading<\/strong>: asynchronous code snippet loads variations and other data in parallel to your website loading, so unlike earlier synchronous code, your website loading is not stalled until we have loaded variation data and other VWO SmartCode. With the new code snippet, all JavaScript code and variation data load parallelly.<\/li>\n\n\n\n
- Fallback to control in case our servers are unavailable<\/strong>: in a rare and unlikely case our servers are unresponsive or take some time to respond, a timeout will happen and your original page will be shown. As history shows, even though it is rare, due to network unavailability or DDOS attacks, even the best networks and servers can become unresponsive. The asynchronous code snippet has a timeout setting (default is 2 seconds, but is configurable — see below). If our servers don’t respond within that time, your normal page will be displayed.<\/li>\n<\/ul>\n\n\n
How to get Asynchronous code?<\/strong><\/h2>\n\n\nLogin to your VWO account, and go to the ‘Smartcode’ section (under the Tools<\/em> tab).<\/p>\n\n\n\nSettings available in Asynchronous code<\/strong><\/p>\n\n\n\nIn the VWO<\/a> SmartCode snippet, you will find two variables that you can adjust (although we recommend keeping default values intact).<\/p>\n\n\n\n\n- settings_tolerance=2000<\/em> This is the maximum time (in milliseconds) for which the code snippet will wait for test settings to arrive from our servers. If no settings arrive within this period, a timeout will happen and your original page will be displayed (the test won’t run in this case, as a fallback has happened).<\/li>\n\n\n\n
- library_tolerance=1500<\/em> This is the maximum time (in milliseconds) for which the code snippet will wait for our JavaScript library to get downloaded from our Dynamic Content Distribution Network. If no file arrives within this period, a timeout will happen and your original page will be displayed (the test won’t run in this case, as fallback has happened).<\/li>\n<\/ul>\n\n\n\n
Download Free: A\/B Testing Guide<\/em><\/span><\/a><\/h2>\n\n\n\nNote that in normal circumstances, all the data and files that need to be downloaded will be downloaded in 100-200 milliseconds, so the timeout is an absolute maximum threshold and can safely be kept as it is.<\/p>\n\n\n\n
If you decrease the threshold, one side effect of it would be that some visitors (with slower connections or with local ISP\/network issues) may not be able to become a part of your test (because a timeout occurred for them), so you may potentially lose some visitors or conversions registered in your A\/B test.<\/p>\n\n\n\n
Understand more about VWO Smartcode in this video.<\/p>\n\n\n\n
Essentially, instead of loading VWO Smartcode<\/a> and your website, sequentially, asynchronous code will load both in parallel, thereby speeding up your website load. See the following graphic to understand it fully:<\/p>\n\n\n Login to your VWO account, and go to the ‘Smartcode’ section (under the Tools<\/em> tab).<\/p>\n\n\n\n Settings available in Asynchronous code<\/strong><\/p>\n\n\n\n In the VWO<\/a> SmartCode snippet, you will find two variables that you can adjust (although we recommend keeping default values intact).<\/p>\n\n\n\n Note that in normal circumstances, all the data and files that need to be downloaded will be downloaded in 100-200 milliseconds, so the timeout is an absolute maximum threshold and can safely be kept as it is.<\/p>\n\n\n\n If you decrease the threshold, one side effect of it would be that some visitors (with slower connections or with local ISP\/network issues) may not be able to become a part of your test (because a timeout occurred for them), so you may potentially lose some visitors or conversions registered in your A\/B test.<\/p>\n\n\n\n Understand more about VWO Smartcode in this video.<\/p>\n\n\n\n<\/figure>\n<\/div>\n\nAdvantages of Asynchronous code snippet:<\/strong><\/h2>\n\n\n
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How to get Asynchronous code?<\/strong><\/h2>\n\n\n
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Download Free: A\/B Testing Guide<\/em><\/span><\/a><\/h2>\n\n\n\n