ReactJS语法,用于if分支中的map函数

推荐制作功能:

renderSkillSection: function(){
    if (this.state.challengeChoices.length < 0) {                               
        return this.state.challengeChoices.map((para2, i) =>
             )
    }
    else {
        return 
Hello world
    }   
},

render: function(){
  return (

    {this.renderSkillSection()}   
  
)
}