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October 31, 2014 09:10
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// source http://jsbin.com/xicego
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta name="viewport" content="width=device-width"> | |
| <meta charset="utf-8"> | |
| <title>JS Bin</title> | |
| <style id="jsbin-css"> | |
| html { | |
| font-family: sans-serif; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script id="jsbin-javascript"> | |
| function wait(ms) { | |
| return new Promise(function(r) { | |
| setTimeout(r, ms); | |
| }); | |
| } | |
| function randomWait() { | |
| return wait(Math.random() * 5000); | |
| } | |
| function fetchHello() { | |
| return randomWait().then(function() { | |
| return "Hello"; | |
| }); | |
| } | |
| function fetchWorld() { | |
| return randomWait().then(function() { | |
| return "World"; | |
| }); | |
| } | |
| function fetchFoobar() { | |
| return randomWait().then(function() { | |
| return "Foobar"; | |
| }); | |
| } | |
| [fetchHello(), fetchWorld(), fetchFoobar()].reduce(function(chain, promise) { | |
| return chain.then(function() { | |
| return promise; | |
| }).then(function(value) { | |
| document.body.appendChild( | |
| document.createTextNode(value + ' ') | |
| ); | |
| }); | |
| }, Promise.resolve()); | |
| </script> | |
| <script id="jsbin-source-css" type="text/css">html { | |
| font-family: sans-serif; | |
| }</script> | |
| <script id="jsbin-source-javascript" type="text/javascript">function wait(ms) { | |
| return new Promise(function(r) { | |
| setTimeout(r, ms); | |
| }); | |
| } | |
| function randomWait() { | |
| return wait(Math.random() * 5000); | |
| } | |
| function fetchHello() { | |
| return randomWait().then(function() { | |
| return "Hello"; | |
| }); | |
| } | |
| function fetchWorld() { | |
| return randomWait().then(function() { | |
| return "World"; | |
| }); | |
| } | |
| function fetchFoobar() { | |
| return randomWait().then(function() { | |
| return "Foobar"; | |
| }); | |
| } | |
| [fetchHello(), fetchWorld(), fetchFoobar()].reduce(function(chain, promise) { | |
| return chain.then(function() { | |
| return promise; | |
| }).then(function(value) { | |
| document.body.appendChild( | |
| document.createTextNode(value + ' ') | |
| ); | |
| }); | |
| }, Promise.resolve());</script></body> | |
| </html> |
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| html { | |
| font-family: sans-serif; | |
| } |
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| function wait(ms) { | |
| return new Promise(function(r) { | |
| setTimeout(r, ms); | |
| }); | |
| } | |
| function randomWait() { | |
| return wait(Math.random() * 5000); | |
| } | |
| function fetchHello() { | |
| return randomWait().then(function() { | |
| return "Hello"; | |
| }); | |
| } | |
| function fetchWorld() { | |
| return randomWait().then(function() { | |
| return "World"; | |
| }); | |
| } | |
| function fetchFoobar() { | |
| return randomWait().then(function() { | |
| return "Foobar"; | |
| }); | |
| } | |
| [fetchHello(), fetchWorld(), fetchFoobar()].reduce(function(chain, promise) { | |
| return chain.then(function() { | |
| return promise; | |
| }).then(function(value) { | |
| document.body.appendChild( | |
| document.createTextNode(value + ' ') | |
| ); | |
| }); | |
| }, Promise.resolve()); |
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