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luojiyin1987/require.html

Created March 16, 2020 10:08
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require.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script>
function loadResource(links, fnSuccess, fnError) {
var script = document.createElement('script');
script.onerror = function () {
document.head.removeChild(script);
fnError();
};
script.onload = fnSuccess
script.src = links.shift();
document.head.appendChild(script);
}
function autoSwitch(resourceList) {
var resource = resourceList.shift();
loadResource([resource], function (success) {
console.log('loaded');
}, function (err) {
console.log('load error')
autoSwitch(resourceList);
});
}
</script>
</head>
<body>
<script>
var resourceList = [
'http://demo-cdn.lab.io/assets/app.js',
'http://demo.cdn2.io/assets/app.js',
'assets/app.js',
];
autoSwitch(resourceList);
</script>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="assets/require-v2.3.6.min.js"></script>
<script>
function autoSwitch(resourceList) {
var resource = resourceList.shift();
requirejs([resource], function (success) {
console.log('loaded');
}, function (err) {
console.log('load error')
autoSwitch(resourceList);
});
}
</script>
</head>
<body>
<script>
var resourceList = [
'http://demo-cdn.lab.io/assets/app.js',
'http://demo.cdn2.io/assets/app.js',
'assets/app.js',
];
autoSwitch(resourceList);
</script>
</body>
</html>
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