The read-only innerHeight property of the Window interface returns the interior height of the window in pixels, including the height of the horizontal scroll bar, if present.
The value of innerHeight is taken from the height of the window's layout viewport. The width can be obtained using the innerWidth property.
An integer value indicating the window's layout viewport height in pixels. The property is read only and has no default value.
To change the width of the window, call one of its resize methods, such as resizeTo() or resizeBy().
To obtain the height of the window minus its horizontal scroll bar and any borders, use the root <html> element's clientHeight property instead.
Both innerHeight and innerWidth are available on any window or any object that behaves like a window, such as a tab or frame.
js
console.log(window.innerHeight); // or
console.log(self.innerHeight);
// will log the height of the frame viewport within the frameset
console.log(parent.innerHeight);
// will log the height of the viewport of the closest frameset
console.log(top.innerHeight);
// will log the height of the viewport of the outermost frameset
To change the size of a window, see window.resizeBy() and window.resizeTo().
To get the outer height of a window, i.e. the height of the whole browser window, see window.outerHeight.
The following figure shows the difference between outerHeight and innerHeight.
html
<p>Resize the browser window to fire the <code>resize</code> event.</p>
<p>Window height: <span id="height"></span></p>
<p>Window width: <span id="width"></span></p>
js
const heightOutput = document.querySelector("#height");
const widthOutput = document.querySelector("#width");
function updateSize() {
heightOutput.textContent = window.innerHeight;
widthOutput.textContent = window.innerWidth;
}
updateSize();
window.addEventListener("resize", updateSize);
You can also view the results of the demo code in a separate page.
| Specification |
|---|
| CSSOM View Module # dom-window-innerheight |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
innerHeight |
1 | 12 |
1From version 4 to 24, this property could give a wrong value before page load in certain circumstances (see bug 641188). |
9 | 9 | 3 | 4.4 | 18 |
4Before version 24, this property could give a wrong value before page load in certain circumstances (see bug 641188). |
10.1 |
1This property returns the height of the visual viewport instead of the layout viewport. See this bug for details. |
1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Window/innerHeight