CanvasRenderingContext2D.font

ctx.font = value;

<canvas id="canvas"></canvas>

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");

ctx.font = "bold 48px serif";
ctx.strokeText("Hello world", 50, 100);

Playable_code

HTML

<canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas>
<div class="playable-buttons">
  <input id="edit" type="button" value="编辑" />
  <input id="reset" type="button" value="重置" />
</div>
<textarea id="code" class="playable-code">
ctx.font = "bold 48px serif";
ctx.strokeText("Hello world", 50, 100);</textarea>

JavaScript

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var textarea = document.getElementById("code");
var reset = document.getElementById("reset");
var edit = document.getElementById("edit");
var code = textarea.value;

function drawCanvas() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  eval(textarea.value);
}

reset.addEventListener("click", function() {
  textarea.value = code;
  drawCanvas();
});

edit.addEventListener("click", function() {
  textarea.focus();
})

textarea.addEventListener("input", drawCanvas);
window.addEventListener("load", drawCanvas);

let f = new FontFace('test', 'url(x)');

f.load().then(function() {
  // Ready to use the font in a canvas context
});

此页面上的兼容性表是根据结构化数据生成的。 如果您想提供数据，请查看https://github.com/mdn/browser-compat-data并向我们发送请求请求。