javascript - reverting the changes when multiple clicks on same div -


i have div mapped render number of times according data sent database. i'm setting background color in div when clicking on div. how can revert changes if click div again?

my code

handleclick(id) {  let el = document.getelementbyid(id);          if (el) {              el.style.backgroundcolor = "#0b97c4";             el.style.color = "#ffffff";              this.setstate({                  votecount: this.state.votecount + 1              })         }          this.props.submitvote(vote_object)  }  render() {          let {contents, submitvote, postid, voted_id} = this.props          return (              <div classname="txt_vote_bar_div" id={this.props.contents.post_poll_content_id}>                 <p classname="txt_vote_choice" id={this.props.contents.post_poll_content_id}                 onclick={() => {this.handleclick(this.props.contents.post_poll_content_id);}}>                     {contents.content}                 </p>                 <p classname="txt_tot_votes"> {this.props.contents.votes_percentage}%                 ({this.state.votecount} votes)                 </p>             </div>         );     };

using above code i'm changing background of div successfully. how can remove background color if select same div again (remove background color or change color)

i make txt_vote_choice "old" css name, , txt_vote_clicked new classname want change. onclick, toggle classname between these 2 classes trick. 

handleclick(id) {    let el = document.getelementbyid(id);    if (el) {      if el.class == "txt_vote_choice" ? "txt_vote_clicked": "txt_vote_choice";        this.setstate({        votecount: this.state.votecount + 1      })    }      this.props.submitvote(vote_object)  }    render() {      let {contents, submitvote, postid, voted_id, voted_css} = this.props      return (      <div  classname="txt_vote_bar_div"            id={this.props.contents.post_poll_content_id}>        <p  classname={voted_css}            id={this.props.contents.post_poll_content_id}            onclick={() => {this.handleclick(this.props.contents.post_poll_content_id);}}>          {contents.content}        </p>        <p classname="txt_tot_votes">           {this.props.contents.votes_percentage}%({this.state.votecount} votes)        </p>      </div>    );  };

then update css accordingly


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