goog.labs.userAgent.browser

Returns an object that provides access to the full version string of the current browser -- or undefined, based on whether the current browser matches the requested browser brand. Note that the full version string is a high-entropy value, and must be asynchronously loaded before it can be accessed synchronously.

Returns the browser version.

Note that for browsers with multiple brands, this function assumes a primary brand and returns the version for that brand.

Additionally, this function is not userAgentData-aware and will return incorrect values when the User Agent string is frozen. The current status of User Agent string freezing is available here: https://www.chromestatus.com/feature/5704553745874944

To mitigate both of these potential issues, use getVersionStringForLogging() or fullVersionOf() instead.

Returns a version string for the current browser or undefined, based on whether the current browser is the one specified. This value should ONLY be used for logging/debugging purposes. Do not use it to branch code paths. For comparing versions, use isAtLeast()/isAtMost() or fullVersionOf() instead.

Returns true if the current browser matches the given brand and is at least the given major version. The major version must be a whole number (i.e. decimals should not be used to represent a minor version).

Returns true if the current browser matches the given brand and is at most the given version. The major version must be a whole number (i.e. decimals should not be used to represent a minor version).

For more information, see: http://docs.aws.amazon.com/silk/latest/developerguide/user-agent.html

Returns whether the current browser's version is at least as high as the given one.

Note that for browsers with multiple brands, this function assumes a primary brand and checks the version for that brand.

Additionally, this function is not userAgentData-aware and will return incorrect values when the User Agent string is frozen. The current status of User Agent string freezing is available here: https://www.chromestatus.com/feature/5704553745874944

To mitigate both of these potential issues, use isAtLeast()/isAtMost() or fullVersionOf() instead.

Requests all full browser versions to be cached. When the returned promise resolves, subsequent calls to fullVersionOf(...).getIfLoaded() will return a value.

This method should be avoided in favor of directly awaiting fullVersionOf(...).load() where it is used.

Resets module-local caches used by functionality in this module. This is only for use by goog.labs.userAgent.testUtil.resetUserAgent (and labs.userAgent tests).