Selectors Level 3 (Selectors 3) Implementation Report

Introduction

This report was prepared to document the current implementation status of the Selectors Level 3 (Selectors 3) specification as of 25 June 2017 and is based on current test results available in the W3C Conformance Test Harness.

Implementations

Four user agents, built from three rendering implementations, were tested across three operating systems.

Tests

The 25 June 2017 revision of the Selectors 3 test suite was used. The test suite consists of 56 tests.

These tests are available in several host language variants:

Some tests only apply to certain language variants; the results for each tested implementation are reported for each tested language variant. Also, not all tests are applicable to each implementation; for example, a browser which implements HTML but not XHTML is not tested for XHTML.

Results

In summary, the results show that 55 of 56 tests were passed by at least two of the tested implementations.

Results were gathered from implementation reports submitted by user agent vendors as well as the general public via the W3C Conformance Test Harness.