如何在javascript中处理多个进度条 [英] How should multiple progress bars be handled in javascript

问题描述

我有一些进度条，每个进度条都绑定到div，使用'setTimeouts'进行更新。

I have a number of progress bars each tied to a div which are updated using 'setTimeouts'.

它的运行方式示例如下：

An example of how it runs is like this :

myDiv._timer = setTimeout(function () {
            func_name(data)
        }, 1);

编辑：根据要求提供我的一个进度条的工作示例：< a href =http://jsfiddle.net/H4SCr/ =nofollow> http://jsfiddle.net/H4SCr/

Edit: As requested a working example of my one progress bar: http://jsfiddle.net/H4SCr/

然而问题是，我有多个带有进度条的div，它们有自己的数据用于计算进展。这意味着在运行中我说有5个不同的超时运行。

The question however is, I have multiple div's with progression bars with their own data to use to calculate progression. Which means with say 5 on the go i have 5 different timeouts running.

我不是javascript的专家，但肯定有一种方法来构建这个以便与一次性用于所有进度条，或者我目前的方法是最好的方法？

I'm no expert in javascript, but surely theres a way to structure this to tie to just one time out for all progress bars, or is my current approach the best method ?

注意：我不使用jQuery。我更喜欢用香草javascript来学习！

Note: i don't use jQuery. I prefer to go with just vanilla javascript to learn!

推荐答案

检查一下：
http://jsfiddle.net/MZc8X/11/

我创建了一个包含容器ID及其增量值的对象数组。

I created an array of objects which contains the container id and its increment value.

// array to maintain progress bars
var pbArr = [{
    pid: 'bar1', // parent container id
    incr: 1 // increment value
}, {
    pid: 'bar2',
    incr: 2
}, {
    pid: 'bar3',
    incr: 3
}, {
    pid: 'bar4',
    incr: 4
}, {
    pid: 'bar5',
    incr: 5
}];

然后，调用函数创建进度条......

And, then call a function to create a progress bar...

var loopCnt = 1; // loop count to maintain width
var pb_timeout; // progress bar timeout function

// create progress bar function

var createPB = function () {

    var is_all_pb_complete = true; // flag to check whether all progress bar are completed executed

    for (var i = 0; i < pbArr.length; i++) {
        var childDiv = document.querySelector('#' + pbArr[i].pid + ' div'); // child div
        var newWidth = loopCnt * pbArr[i].incr; // new width
        if (newWidth <= 100) {
            is_all_pb_complete = false;
            childDiv.style.width = newWidth + '%';
        } else {
            childDiv.style.width = '100%';
        }
    }

    if (is_all_pb_complete) { // if true, then clear timeout
        clearTimeout(pb_timeout);
        return;
    }

    loopCnt++; // increment loop count

    // recall function
    pb_timeout = setTimeout(function () {
        createPB();
    }, 1000);
}

// call function to initiate progress bars
createPB();

希望，它适合你。

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