handleImgPrev()

in frontend/src/containers/Home.js [168:180]


  handleImgPrev() {
    const curidx = this.state.selectedImg;
    const maxidx = this.state.imglist.length - 1;
    var nextidx = curidx - 1;
    if(nextidx < 0) {
      console.log("going back to max");
      nextidx = maxidx;
    }
    else {
      console.log("decrementing");
    }
    this.setState({ selectedImg: nextidx});
  }