ionic3自定义单选

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  list=[{"key":"you","value":'优',"chek":true},{"key":"liang","value":'良',"chek":false},{"key":"cha","value":'差',"chek":false}];
  data={"key":"you","value":'优',"chek":true};
  constructor(public navCtrl: NavController) {

  }
   public  chekFun(i){
      let me=this;
      this.list.forEach(function(data,inde,array) {
        if(i==inde){
          data.chek=true;
          me.data=data;
        }else{
          data.chek=false
        }
      });
    }

  public submit(){
    console.log(this.data);
  }
}
import { Component } from '@angular/core