像这样创建函数:

function gameLines(game) {
    return game.lines.map(function (lineGroup) {
        return (
            <div className="row">
                <div className="col-md-1">
                    {lineGroup.Pay}
                </div>
                <div className="col-md-3">
                    <strong>{this.getLineInfo(lineGroup.HomeInfo)}</strong>
                </div>
                <div className="col-md-3">
                    <strong>{this.getLineInfo(lineGroup.Score)}</strong>
                </div>
                <div className="col-md-3">
                    <strong>{this.getLineInfo(lineGroup.AwayInfo)}</strong>
                </div>
            </div>
        )
    })
}

这样使用:

<div className="col-md-4"><h4>ML</h4>
    { this.gameLines(game) }
</div>

别忘了绑定函数

constructor() {
    ...
    this.gameLines = this.gameLines.bind(this);
    this.getLineInfo = this.getLineInfo.bind(this);
}