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test-jquery-deferred.html
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
</body>
<script type="text/javascript">
function init(){
var promise = $.Deferred();
setTimeout(function(){
console.log('first');
promise.resolve(1,2);
}, 1000);
return promise;
}
$.when(init())
.then(function(args1, args2){
console.log('second: ', args1, args2);
var promise = $.Deferred();
setTimeout(function(){
promise.resolve(3);
}, 1000);
return promise;
})
.then(function(args){
var promise = $.Deferred();
setTimeout(function(){
try{
console.log('third: ', args);
// throw 'err';
promise.resolve(4);
}catch(e){
promise.reject(41);
}
}, 1000);
return promise;
})
.then(function(args){
var promise = $.Deferred();
setTimeout(function(){
console.log('forth: ', args);
promise.resolve(5);
}, 1000);
return promise;
})
.fail(function(args){
console.log('fail: ', args);
});
</script>
</html>