Diagnosis
Water on the floor means you've got a leak from a hose, connection, or seal. The most common source on a top-loader is a loose or split fill hose, or a failed pump hose.
How to Fix It
You need to find the source. Unplug the washer and pull it out. Have towels ready. 1) Check the two fill hoses at the back where they connect to the washer and the wall valves. Tighten any that feel loose (hand-tight only). Look for cracks. 2) Check the drain hose connection at the pump. 3) The most likely culprit is the large rubber tub seal (where the inner tub meets the outer tub) or a crack in the plastic tub itself. You might need to remove the front panel to see better. Run a cycle with the panel off (be careful) and watch for where the drip starts.
If That Didn't Work
The water inlet valve on the back could have an internal crack and be leaking slowly only when water is flowing. Inspect it closely for moisture or mineral buildup indicating a slow leak.
Heads Up
Don't ignore a small leak. Water inside the cabinet can eventually reach the main control board, which is mounted low on these models. A wet control board is a surefire way to turn a $20 hose fix into a $300+ repair.