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index.html
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index.html
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<!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="./Future.js"></script>
</head>
<body>
<script>
var a = new Future(function(resolve, reject){
setTimeout(function(){
console.log('success')
resolve(true)
}, 1000)
})
var b = new Future(function(resolve, reject){
resolve("我是B")
})
a.then(function(res){
console.log('first', res);
return "qianzhaoy"
})
a.then(function(res){
console.log(res);
return "啦拉拉"
}).then(function(res){
console.log(res);
return b
}).then(function(res){
console.log(res)
}).then(function(res){
console.log(res)
}).catch(function(err){
console.log(err)
})
setTimeout(function(){
a.then(function(res){
console.log("settimeout: ", res)
})
},2000)
</script>
</body>
</html>