/
getViewportDimensions.js
60 lines (50 loc) · 1.28 KB
/
getViewportDimensions.js
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/**
* Copyright (c) 2013-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @providesModule getViewportDimensions
* @flow
* @typechecks
*/
type ViewportDimensions = {width: number, height: number};
function getViewportWidth(): number {
let width;
if (document.documentElement) {
width = document.documentElement.clientWidth;
}
if (!width && document.body) {
width = document.body.clientWidth;
}
return width || 0;
}
function getViewportHeight(): number {
let height;
if (document.documentElement) {
height = document.documentElement.clientHeight;
}
if (!height && document.body) {
height = document.body.clientHeight;
}
return height || 0;
}
/**
* Gets the viewport dimensions including any scrollbars.
*/
function getViewportDimensions(): ViewportDimensions {
return {
width: window.innerWidth || getViewportWidth(),
height: window.innerHeight || getViewportHeight(),
};
}
/**
* Gets the viewport dimensions excluding any scrollbars.
*/
getViewportDimensions.withoutScrollbars = function(): ViewportDimensions {
return {
width: getViewportWidth(),
height: getViewportHeight(),
};
};
module.exports = getViewportDimensions;