阵列处理性能

Posted 2021-02-26

This method is better suited for processing large arrays in the smallest amount of time without affecting the user experience.

//Copyright 2009 Nicholas C. Zakas. All rights reserved.
//MIT Licensed
function timedChunk(items, process, context, callback){
    var todo = items.concat();   //create a clone of the original
 
    setTimeout(function(){
 
        var start = +new Date();
 
        do {
             process.call(context, todo.shift());
        } while (todo.length > 0 && (+new Date() - start < 50));
 
        if (todo.length > 0){
            setTimeout(arguments.callee, 25);
        } else {
            callback(items);
        }
    }, 25);
}