HTML implementation to obtain the width and height of the browser's visible area (pure code)

This article introduces you to the HTML implementation of obtaining the width and height of the browser's visible area (pure code). It has certain reference value. Friends in need can refer to it. I hope it will help You helped.

/**
     * 获取浏览器可视区域宽度
     */
    function getViewPortOffset() {
        if (window.innerWidth) {
            return {
                w: window.innerWidth,
                h: window.innerHeight
            }
        } else if (document.compatMode = "BackCompat") {
            return {
                w: document.body.clientWidth,
                h: document.body.clientHeigth
            }
        } else {
            return {
                w: document.documentElement.clientWidth,
                h: document.documentElement.clientHeight
            }
        }
    }
    console.log(getViewPortOffset());

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