nb_taku.saito nbtacksaito

## chatjs-afterupdate.html
<!DOCTYPE html>
<html lang="ja">
  <head>
    <title>chartJS試してみたよ</title>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/chart.js@2.9.4/dist/Chart.min.js"></script>
    <script>
      const overwriteCanvas = function () {
        console.log("overwriteCanvas");
        const targetCanvas = document.getElementById("targetCanvas");
        const targetCanvasContext = targetCanvas.getContext('2d');
	<!DOCTYPE html>
	<html lang="ja">
	<head>
	<title>chartJS試してみたよ</title>
	<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/chart.js@2.9.4/dist/Chart.min.js"></script>
	<script>
	const overwriteCanvas = function () {
	console.log("overwriteCanvas");
	const targetCanvas = document.getElementById("targetCanvas");
	const targetCanvasContext = targetCanvas.getContext('2d');