可视范围高度

let heightPx = uni.getWindowInfo().windowHeight + uni.getWindowInfo().windowTop

官方手册

uni.getWindowInfo() | uni-app官网uni-app,uniCloud,serverless,uni.getWindowInfo()https://uniapp.dcloud.net.cn/api/system/getWindowInfo.html

实测数据

============================
uni.getWindowInfo() >> APP-安卓真机实测
============================
{
    "pixelRatio": 3,
    "screenWidth": 360,
    "screenHeight": 640,
    "windowWidth": 360,
    "windowHeight": 640,
    "statusBarHeight": 24,
    "safeArea": {
        "left": 0,
        "right": 360,
        "top": 24,
        "bottom": 640,
        "width": 360,
        "height": 616
    },
    "safeAreaInsets": {
        "top": 24,
        "right": 0,
        "bottom": 0,
        "left": 0
    },
    "windowTop": 0,
    "windowBottom": 0,
    "screenTop": 0
}

============================
uni.getWindowInfo() >> 纯H5 - 非公众号
============================
{
    "windowTop": 44,
    "windowBottom": 0,
    "windowWidth": 390,
    "windowHeight": 800,
    "pixelRatio": 3.0000001192092896,
    "screenWidth": 390,
    "screenHeight": 844,
    "statusBarHeight": 0,
    "safeArea": {
        "left": 0,
        "right": 390,
        "top": 0,
        "bottom": 844,
        "width": 390,
        "height": 844
    },
    "safeAreaInsets": {
        "top": 0,
        "right": 0,
        "bottom": 0,
        "left": 0
    },
    "screenTop": 44
}


============================
uni.getWindowInfo() >> H5公众号 - 苹果机iPhone13Pro
============================
{
    "windowTop": 44,
    "windowBottom": 0,
    "windowWidth": 390,
    "windowHeight": 710,
    "pixelRatio": 3.0000001192092896,
    "screenWidth": 390,
    "screenHeight": 753,
    "statusBarHeight": 0,
    "safeArea": {
        "left": 0,
        "right": 390,
        "top": 0,
        "bottom": 720,
        "width": 390,
        "height": 720
    },
    "safeAreaInsets": {
        "top": 0,
        "right": 0,
        "bottom": 34,
        "left": 0
    },
    "screenTop": 43
}

============================
uni.getWindowInfo() >> H5公众号 - 安卓机Nexus 6
============================
{
    "windowTop": 44,
    "windowBottom": 0,
    "windowWidth": 412,
    "windowHeight": 620,
    "pixelRatio": 3.0000001192092896,
    "screenWidth": 412,
    "screenHeight": 664,
    "statusBarHeight": 0,
    "safeArea": {
        "left": 0,
        "right": 412,
        "top": 0,
        "bottom": 664,
        "width": 412,
        "height": 664
    },
    "safeAreaInsets": {
        "top": 0,
        "right": 0,
        "bottom": 0,
        "left": 0
    },
    "screenTop": 44
}