HTMLProgressElement：position 属性

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

HTMLProgressElement 接口的 position 只读属性返回 <progress> 元素的当前进度。

值

对于确定的进度条返回当前值除以最大值的结果，也就是说，它是介于 0.0 和 1.0 之间的分数。

对于不确定的进度条该值总是 -1。

示例

HTML

html
确定的进度条：<progress id="pBar"></progress>位置： <span>0</span>

JavaScript

js
const pBar = document.getElementById("pBar");
const span = document.getElementsByTagName("span")[0];

pBar.max = 100;
pBar.value = 0;

setInterval(() => {
  pBar.value = pBar.value < pBar.max ? pBar.value + 1 : 0;

  span.textContent = pBar.position;
}, 100);

规范

Specification
HTML Standard
# dom-progress-position-dev

浏览器兼容性

BCD tables only load in the browser