What are the ways to terminate JS requests?-PHP Chinese Network Q&A

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What are the ways to terminate JS requests?

typecho 2017-06-28 09:28:55

952

I encountered a similar problem during the interview. The general idea is that when loading the page, some js file resources will be loaded using script tags. If these resources are not requested back for a long time, how to manually terminate the request?

I know that Ajax requests have an abort method. I wonder if the interviewer wants to ask this, and is there any other way to terminate the request?

typecho

Following the voice in heart.

reply all (3)

我想大声告诉你2017-06-28 09:30:55 3 floor

Thanks for the invitation.
Like @小Stream said, it’s timeout.

The rough implementation idea is as follows:

var sequence = ['foo', 'bar', 'baz', 'base', 'ball', 'hello', 'world', '100k more'], start = Date.now(); setTimeout(function _worker() { do { var element = sequence.shift(); // do something with element } while( sequence.length && (Date.now() - start < 100) ); if( sequence.length ) setTimeout(_worker, 25); }, 25);

In the above example, queue loading is performed at intervals of 25 milliseconds, and the loading time is within 100ms.

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给我你的怀抱2017-06-28 09:30:55 2 floor

What should be examined is the timeout of loading resources

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typecho2017-06-28 09:30:55 1 floor

The loading of

Save astest1.js:

require.config({ paths: { 'jquery': '//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery', 'underscore': '//cdn.bootcss.com/underscore.js/1.7.0/underscore' }, waitSeconds: 20 }); require(['jquery'], function (module) { console.log("jQuery " + $.fn.jquery + " successfully loaded. "); }, function (err) { console.log("SHIT happened while loading jQuery! "); }); require(['underscore'], function (module) { console.log(_.last([1, 2, 3, "Underscore.js successfully loaded. "])); }, function (err) { console.log("SHIT happened while loading Underscore.js! "); });

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