Hatem Ben Arfa and Papiss Cisse scored in the first 12 minutes to give the Tyneside club a stranglehold on the fixture, before the Senegal international scored his second and Newcastle’s third just after the half-hour mark.
Shane Long pulled one back for the Baggies after the break, but the game finished in favour of the Geordies, who are now level on points with Chelsea.
Alan Pardew was quick to praise his squad after the victory.
“I just thought we had a real good control of our passing today and our movement was terrific,” he told Sky Sports after the game.
“We tried to work down the sides of (Youssouf) Mulumbu because he protects the centre of the pitch really well and that worked well for us.
“But you need outstanding players to win games here and our best player stepped forward today – Hatem Ben Arfa was really, really difficult to play against, some of his runs were incredible.
“And Demba (Ba) and Papiss are going to score goals and I kept saying to the staff, ‘we’re going to get three goals in a game shortly because we’ve got so many goalscorers’, and today it came.
“We’ve just got a really good bunch who are trying so hard. To have the same points as Chelsea at this stage is phenomenal, really.
“And you have to take your hats off to the players – they’ve worked really, really hard,” he concluded.
Newcastle host Liverpool next Sunday at the Sports Direct Arena.
By Gareth McKnight