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 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:位置: 0
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 # dom-progress-position-dev |