What are the ways to terminate JS requests?

Question

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?

我想大声告诉你 · Answer

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.

给我你的怀抱 · Answer

What should be examined is the timeout of loading resources

typecho · Answer

The loading of

Save as test1.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! ");
});