极客观点
项目管理
HarmonyOS
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>promise-load</title>
</head>
<body>
<script>
function loadImageAsync(url) {
return new Promise((resolve, reject) => {
let img = new Image()
img.src = url
img.onload(()=>resolve(img))
img.onerror(()=>reject())
console.log(3);
})
}
loadImageAsync('https://avatarsabc.githubusercontent.com/u/54520846?s=400&u=5220402538d51b3c67cf208ea16f93cb218fe4d2&v=4').then((imgDom) => {
console.log('success');
document.body.appendChild(imgDom)
}).catch(() => {
console.log('error-Load');
})
</script>
</body>
</html>为什么console.log(3) 没有执行
html5
onload is not function?报错了吧。正确的应该是