The snippet
Optimizely Web Experimentation JavaScript snippet
Optimizely Web Experimentation Optimizely Personalization Optimizely Web Experimentation and Optimizely Personalization create experiments and campaigns on your site by executing a one-line JavaScript snippet that contains your unique project ID. After you implement the snippet, you can build experiments and campaigns on your site.
Implement the one-line JavaScript snippet
Optimizely Web Experimentation Optimizely Personalization If this is your first time using Optimizely Web Experimentation or Optimizely Personalization, add a small snippet of code (see Optimizely Web Experimentation JavaScript snippet ) to the \<head> tag of your site's code to start running experiments. This snippet contains your unique project ID https //support.
Snippet order of activation
Optimizely Web Experimentation Optimizely Personalization Optimizely Web Experimentation and Optimizely Personalization create experiments and campaigns on your site by executing a specific JavaScript snippet configured for your account and page. This snippet automatically updates every time you create, modify, or archive any asset or setting compiled into the snippet.
Custom snippets
Optimizely Web Experimentation Optimizely Personalization To run an experiment or campaign, include a snippet of code inside the \<head> tags on any pages where your experiment runs. Without this snippet, Optimizely Web Experimentation cannot know what to track or even where to find your experiment in the first place.
Manage custom snippets
Optimizely Web Experimentation Optimizely Personalization Custom snippets determine what projects and pages go into your snippet. Custom snippet permissions are based on the collaborator role .
Install the snippet as a non-blocking resource
Optimizely Web Experimentation For better page-load performance, consider deploying Optimizely Web Experimentation as a non-blocking resource using either defer or async . However, this sometimes causes page flickering , which in turn can generate sub-optimal user experiences.
Load snippet synchronously and asynchronously
Optimizely Web Experimentation A/B testing scripts can be loaded in two ways Synchronously – where scripts are loaded sequentially, one after another, starting with the \<head> tag. Asynchronously – where some scripts can be loaded simultaneously.