@Blog

import { createApp } from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js';
const Evaluation = {
    props: {
      defaultActive: {
        type: Number,
        required: true
      },
      totalItems: {
        type: Number,
        required: true
      },
      avgVal:{
        type:Number,
        required:true
      }
    },
    data() {
      return {
        defaultActived: null,
        items: []
      };
    },
    created() {
      // HTMLから渡された値を基に、初期の状態を設定
      this.items = Array.from({ length: this.totalItems }, (v, i) =>{
        return (i + 1) <= this.defaultActive ? '★' : '☆';
      }
      );
    },
    methods: {
      // マウスが触れた時に☆を★に変える
      hover(index) {
        this.items = Array.from({ length: this.totalItems }, (v, i) =>
            i <= index ? '★' : '☆'
        );
        document.getElementById('evaluationVal').setAttribute('data-val',index);
      },
      // マウスが離れた時に元の値に戻す
      onclick() {       
        let i = Math.floor(document.getElementById('evaluationVal').getAttribute('data-val')) + 1;
         (async (i) =>{
            let frm = new FormData();
            frm.append('id',document.querySelector('#evaluation_id').getAttribute('data-id'));
            frm.append('val',i);
            let res = await fetch('/evaluation/index.php',{
                method:'post',
                body:frm
            }).then(result=>result.json());
            alert(res.msg);
            if(Math.floor(res.flg) === 1){
              const roundToDecimal = (number, decimalPlaces) =>{
                const multiplier = Math.pow(10, decimalPlaces);
                return Math.round(number * multiplier) / multiplier;
              } 
              document.getElementById('evaluationAvgVal').textContent = roundToDecimal(res.avgVal,2);
              this.defaultActived = res.avgVal;
              this.reRender();
            }
            
        })(i);
      }, 
      reRender() {
        // HTMLから渡された値を基に、初期の状態を設定
        this.items = Array.from({ length: this.totalItems }, (v, i) =>{
            return (i + 1) <= this.defaultActived ? '★' : '☆';
          }
        );
      }    
    },
    template: `
      <div>
        <span v-for="(item, index) in items" :key="index">
          <span
            @mouseover="hover(index)"
          >
            {{ item }}
          </span>
        </span>
        [<span  id='evaluationAvgVal'>{{this.avgVal}}</span>]
        <button @click="onclick()"
         id='evaluationVal'
         data-val='5'
         class='bbtn'
         title="★に触れることで評価の変更が出来ます．"
         >評価する</button>
      </div>
    `
  };
  const app = createApp({});
  app.component('evaluation', Evaluation);
  app.mount('#evaluation');

<?php

class streamDownload
{
    public $flg = false;
    public $fileName = '';
    public $to_encoding = 'sjis';
    public $from_encoding = 'UTF-8';

    public function __construct($fileName,$to_encoding = 'sjis',$from_encoding = 'UTF-8')
    {
        $this->fileName = $fileName;
        return $this;
    }

    public function checkSplFileInfo()
    {
        if((new SplFileInfo($this->fileName))->getExtension() === 'csv'){
            $this->flg = true;
        }
        return $this;
    }

    public function download($data)
    {
        if(!$this->flg){
            return $this->flg;
        }

        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename='.$this->fileName);        
        $stream = fopen('php://output', 'w');
            foreach ($data as $row) {
                $row = mb_convert_encoding($row,$this->to_encoding,$this->from_encoding);
                fputcsv($stream, $row);
            }
        fclose($stream);
        exit;
    }
}

$data = [
    ['テスト1', '高知太郎', 'abc@example.com'],
    ['テスト2', '高知花子', 'def@example.com'],
    ['テスト3', '高知喜多郎', 'dev@example.com'],
];

(new streamDownload('test.csv'))->checkSplFileInfo()->download($data);

function sosu(){
    let sosuno = [2];
    for(let i=3;i<=9999;i++){
        let flg = true;
        if(i%2===0){
            continue;
        }
        for(let ii=2;ii<i;ii++){
            if(ii%2===0){
                continue;
            }
            if(i%ii===0){
                flg = false;
                break;
            }
        }
        if(flg){
            sosuno.push(i);
        }
    }
    document.getElementById("my-textarea").value = sosuno.join(',');
}
document.getElementById("btn").addEventListener("click",sosu);