matrix

let Table = {
    increment: 0,
    init(rows,columns){
        this.rows = rows;
        this.columns = columns;
        this.matrix = this.generateMatrix();
    },
    generateMatrix(){
        let arr = [];
        for(let i=0; i<this.columns; i++){
            arr[i] = new Array(this.columns);
            for(let j=0; j<this.rows; j++){
                arr[i][j] = {id: this.increment++, amount: Math.random()}
            }
        }
        return arr;
    }
}

Table.init(3, 3);
console.log(Table.matrix);