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doSynchronousLoop in javascript
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| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| <html xmlns="http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> | |
| <title>doSynchronousLoop</title> | |
| <script type="text/javascript"> | |
| function doSynchronousLoop(data, processData, done) { | |
| if (data.length > 0) { | |
| var loop = function(data, i, processData, done) { | |
| processData(data[i], i, function() { | |
| if (++i < data.length) { | |
| setTimeout(function() { | |
| loop(data, i, processData, done); | |
| }, 0); | |
| } else { | |
| done(); | |
| } | |
| }); | |
| }; | |
| loop(data, 0, processData, done); | |
| } else { | |
| done(); | |
| } | |
| } | |
| function processData(sum, i, callback) { | |
| console.log(sum, i); | |
| return callback(); | |
| } | |
| function done() { | |
| console.log("done"); | |
| } | |
| let myArray = [0,1,2] | |
| doSynchronousLoop(myArray, processData, done) | |
| </script> | |
| </head> | |
| <body> | |
| <h1> doSynchronousLoop</h1> | |
| </body> | |
| </html> |
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