12 mars 2020 — js + canvas method to draw a five-pointed star. The specific code is as follows:
JS. var canvas = document.getElementById ('viewport'), context = canvas.getContext ('2d'); make_base (); function make_base () { base_image = new Image (); base_image.src = 'img/base.png'; context.drawImage (base_image, 100, 100); } The image exists and I get no JavaScript errors. The image just doesn't display.
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innerHeight; this.cw = canvas.width; this.ch = canvas.height; // 随机 上一篇： Angular.js进阶 8 juli 2009 — Den nya canvas-taggen i HTML5 revolutionerar det som är möjligt att skapa en canvas-tagg med vanlig markup, rita i den med JavaScript. Välkommen! Välkommen till kursen L9HK30 Hem- och konsumentkunskap 3 för lärare 7-9 15 hp. Här under följer Kursinformation om kursplan, litteraturlista och canvas.setAttribute("style","border-style:solid;border-width:1px");. body_append_child(canvas);. return canvas;.