Grabbing content from a dictionary that is stored in a text file. [JavaScript]

I’m building a Pokemon team builder app. I want to click a button (which displays a Pokemons image so I know who it is) and have the data from a dictionary (image, name, moves, ability, etc.) displayed on the top div under the class “monster” (replacing the egg image). Just not sure where to get started.

html

<h2>Current Team</h2>
    <div id="your-team" class="team">
        <div class="slot">
            <div class="monster">
                <img src="egg.png" alt="">
            </div>
            <div class="info">
                <p>test</p>
            </div>
        </div>

    <h2>All Pokemon</h2>
    <div class="your-options" id="options">
        <div class="all-monsters" id="all">
            <ol class="list-pokemon">
                <li>
                    <button>
                        <img src="treecko.png" alt="">
                    </button>
                </li>

                <li>
                    <button>
                        <img src="grovyle.png" alt="">
                    </button>
                </li>

                <li>
                    <button>
                        <img src="sceptile.png" alt="">
                    </button>
                </li>
            </ol>
        </div>
    </div>

dictionary (stored in a separate text file)

let pokemon = {
    252: {
        "name": "Treecko",
        "type": "Grass",
        "ability": "Overgrow",
        "height": "1'08''",
        "weight": "11.0lbs",
        "location": "Starter Pokemon",
        "moves": {
            "Level --": "Pound",
            "Level --": "Leer",
            "Level 6": "Absorb",
            "Level 11": "Quick Attack",
            "Level 16": "Pursuit",
            "Level 21": "Screech",
            "Level 26": "Mega Drain",
            "Level 31": "Agility",
            "Level 36": "Slam",
            "Level 41": "Detect",
            "Level 46": "Giga Drain",
            "Level 50": "Energy Ball"
        },
    },
}