javascript - 多个 slider 相互 react

Question

这里是新手。我正在做我的第一个元素，我想为不同的人(普通人、 worker 、农民等)提供 slider ，但我不知道如何放置多个 slider 以及如何让它们全部工作。我从 W3schools 获取代码并更改了一些东西，但似乎我已经破坏了它并且我不知道如何处理它。我希望有 2 个 slider 都在工作，并且当一个 slider 上升而另一个 slider 下降时(将人员分配给他们的工作)。这是我的代码(我不知道它是否有任何帮助)

        var people = 100;
        var workers = 0;
        document.onreadystatechange = function () {
            if (document.readyState == "complete") {

                var slider = document.getElementById("sliderWorkers");
                var output = document.getElementById("workers").innerHTML = workers;
                output.innerHTML = workers;



                slider.oninput = function () {
                    output.innerHTML = this.value;
                }

                /*################################################################*/
                var slider2 = document.getElementById("sliderPeople");
                var output = document.getElementById("people").innerHTML = people;
                output.innerHTML = slider.value;


                slider.oninput = function () {
                    output.innerHTML = this.value;
                }


            }
        }
        setInterval(function () {


            document.getElementById("people").innerHTML = people;
            document.getElementById("workers").innerHTML = workers;
        }, 100000);

        .slider, .slider2 {
  -webkit-appearance: none;
  width: 10%;
  height: 7px;
  border-radius: 5px;
  background: #d3d3d3;
  outline: none;
  -webkit-transition: .2s;
  transition: opacity .2s;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: black;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: black;
  cursor: pointer;
}

.slider2::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: black;
  cursor: pointer;
}
.slider2::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: black;
  cursor: pointer;
}

<h1>Population range slider</h1>

    <div class="slidecontainer">
        <input type="range" min="0" max="100" value="0" class="slider" id="sliderWorkers">
        <p>Value wokers: <div id="workers"></div>
        </p>
    </div>
    <div class="slidecontainer">
        <input type="range" min="0" max="100" value="100" class="slider2" id="sliderPeople">
        <p>Value people: <div id="people"></div>
        </p>
    </div>

Answer 1

您可以使用 DOMContentLoaded和 addEventListener以便在 dom 准备就绪时开始您的任务。

在你之后querySelectorAll为了选择所有范围元素，并且每个元素都需要一个事件处理程序。

在此事件处理程序中，您可以更新值。

注意:P + DIV 现在是 P 里面有一个 SPAN。

document.addEventListener('DOMContentLoaded', function(e) {
    document.querySelectorAll('[type="range"]').forEach(function (ele) {
        ele.addEventListener('input', function (e) {
            this.parentElement.querySelector('span').textContent = this.value;
            var next = this.closest('div').nextElementSibling;
            if (next.tagName != 'DIV') {
                next = this.closest('div').previousElementSibling;
            }
            next.querySelector('[type="range"]').value = 100 - +this.value;
            next.querySelector('span').textContent = 100 - +this.value;
        });
        // start with an initial value.....simultating an input...
        ele.parentElement.querySelector('span').textContent = ele.value;
    });
})

.slider {
    -webkit-appearance: none;
    width: 10%;
    height: 7px;
    border-radius: 5px;
    background: #d3d3d3;
    outline: none;
    -webkit-transition: .2s;
    transition: opacity .2s;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: black;
    cursor: pointer;
}

.slider::-moz-range-thumb {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: black;
    cursor: pointer;
}

<h1>Population range slider</h1>

<div class="slidecontainer">
    <input type="range" min="0" max="100" value="0" class="slider" id="sliderWorkers">

    <p>Value wokers: <span id="workers"></span></p>

</div>
<div class="slidecontainer">
    <input type="range" min="0" max="100" value="100" class="slider" id="sliderPeople">

    <p>Value people: <span id="people"></span></p>
</div>