JavaScript『canvas』

背景
投稿者投稿者marineいいね4お気に入り登録1
プレイ回数2140難易度(3.7) 1567打 英語 英字
JavaScript 暗記用です
HTMLのキャンバスにJavaScriptで描画
順位 名前 スコア 称号 打鍵/秒 正誤率 時間(秒) 打鍵数 ミス 問題 日付
1 mh 2342 頑張ったね! 2.3 98.1% 656.6 1567 29 57 2025/12/08

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問題文

ふりがな非表示 ふりがな表示
(c.fillRect(x,y,w,h);) c.fillRect(x,y,w,h); (c.strokeRect(x,y,w,h);) c.strokeRect(x,y,w,h); (c.clearRect(x,y,w,h);) c.clearRect(x,y,w,h); (c.beginPath();) c.beginPath(); (c.moveTo(x,y);) c.moveTo(x,y); (c.lineTo(x,y);) c.lineTo(x,y); (c.closePath();) c.closePath(); (c.quadraticCurveTo(px,py,x,y);) c.quadraticCurveTo(px,py,x,y); (c.bezierCurveTo(px,py,px,py,x,y);) c.bezierCurveTo(px,py,px,py,x,y); (c.arcTo(x,y,x,y,r);) c.arcTo(x,y,x,y,r);
(c.arc(x,y,r,0,n/180*Math.PI);) c.arc(x,y,r,0,n/180*Math.PI); (c.arc(x,y,r,0,n/180*Math.PI,true);) c.arc(x,y,r,0,n/180*Math.PI,true); (c.rect(x,y,w,h);) c.rect(x,y,w,h); (c.fill();) c.fill(); (c.fillStyle='blue';) c.fillStyle='blue'; (c.stroke();) c.stroke(); (c.strokeStyle='red';) c.strokeStyle='red'; (c.lineWidth=w;) c.lineWidth=w; (c.lineCap='round';) c.lineCap='round'; (c.lineJoin='bevel';) c.lineJoin='bevel';
など
(c.miterLimit=2;) c.miterLimit=2; (c.clip();) c.clip(); (c.globalAlpha=0.5;) c.globalAlpha=0.5; (c.shadowColor='#0008';) c.shadowColor='#0008'; (c.shadowOffsetX=3;) c.shadowOffsetX=3; (c.shadowOffsetY=4;) c.shadowOffsetY=4; (c.shadowBlur=5;) c.shadowBlur=5; (c.save();) c.save(); (c.restore();) c.restore(); (c.scale(wRate,hRate);) c.scale(wRate,hRate); (c.rotate(n/180*Math.PI);) c.rotate(n/180*Math.PI); (c.translate(x,y);) c.translate(x,y); (c.transform (scaleX,angleY,angleX,scaleY,moveX,moveY);) c.transform (scaleX,angleY,angleX,scaleY,moveX,moveY); (c.setTransform (scaleX,angleY,angleX,scaleY,moveX,moveY);) c.setTransform (scaleX,angleY,angleX,scaleY,moveX,moveY); (const w=canvas.width; const lineG=c.createLinearGradient(0,0,w,0);) const w=canvas.width; const lineG=c.createLinearGradient(0,0,w,0); (const h=canvas.height; const lineG=c.createLinearGradient(0,0,0,h);) const h=canvas.height; const lineG=c.createLinearGradient(0,0,0,h); (lineG.addColorStop(0,'#f00'); lineG.addColorStop(1,'#00f');) lineG.addColorStop(0,'#f00'); lineG.addColorStop(1,'#00f'); (const [w,h]=[canvas.width,canvas.height]; const RG=c.createRadialGradient(w/2,h/2,0,w/2,h/2,h/2);) const [w,h]=[canvas.width,canvas.height]; const RG=c.createRadialGradient(w/2,h/2,0,w/2,h/2,h/2); (const CP=c.createPattern(img,'repeat-y'); c.fillStyle=CP;) const CP=c.createPattern(img,'repeat-y'); c.fillStyle=CP; (c.strokeText('xyz',50,100,200);) c.strokeText('xyz',50,100,200); (c.fillText('xyz',50,100,200);) c.fillText('xyz',50,100,200); (c.textAlign='center';) c.textAlign='center'; (c.font='italic bold 60px serif';) c.font='italic bold 60px serif'; (c.textBaseline='middle';) c.textBaseline='middle'; (console.log(c.measureText('abc').width);) console.log(c.measureText('abc').width); (c.drawImage(img,x,y);) c.drawImage(img,x,y); (c.drawImage(img,x,y,w,h);) c.drawImage(img,x,y,w,h); (c.drawImage(img,10,10,30,30,0,0,w,h);) c.drawImage(img,10,10,30,30,0,0,w,h); (const imgD=c.createImageData(w,h); const imgD2=c.createImageData(imgD);) const imgD=c.createImageData(w,h); const imgD2=c.createImageData(imgD); (imgD.data;) imgD.data; (const imgD3=c.getImageData(x,y,w,h);) const imgD3=c.getImageData(x,y,w,h); (c.putImageData(imgD,x,y);) c.putImageData(imgD,x,y); (imagedata.width; imagedata.height;) imagedata.width; imagedata.height; (c.globalCompositeOperation='destination-over';) c.globalCompositeOperation='destination-over'; (c.canvas;) c.canvas; (c.isPointInPath(x,y);) c.isPointInPath(x,y); (c.caretBlinkRate();) c.caretBlinkRate();
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