phaser/examples/animation/sprite sheet.js

var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create });

function preload() {

    //  37x45 is the size of each frame

    //  There are 18 frames in the PNG - you can leave this value blank if the frames fill up the entire PNG, but in this case there are some
    //  blank frames at the end, so we tell the loader how many to load

    game.load.spritesheet('mummy', 'assets/sprites/metalslug_mummy37x45.png', 37, 45, 18);
}

function create() {

    var mummy = game.add.sprite(300, 200, 'mummy');

    //  Here we add a new animation called 'walk'
    //  Because we didn't give any other parameters it's going to make an animation from all available frames in the 'mummy' sprite sheet
    mummy.animations.add('walk');

    //  And this starts the animation playing by using its key ("walk")
    //  30 is the frame rate (30fps)
    //  true means it will loop when it finishes
    mummy.animations.play('walk', 20, true);

}