Question

我是竞赛团队的一员，我们正在尝试获取用户位置，并从该输出中获取其位置是否适合某种能源。我真正需要的只是一种方式：

将他们的经度和经度设置为两个独立的全局（我相信这是正确的术语）变量，或者
创建两个方法，一个在调用时返回用户纬度，另一个返回经度

我对JavaScript仍然相当陌生，对我的问题，或者我错过的任何其他问题的任何帮助，或者我做错的更好的编程习惯都会有所帮助。我将包含所有代码，以便您可以看到我的目标，但我认为只有两种方法需要一些工作。非常感谢。

P.S。如果我的帖子有问题，我很抱歉，这是我第一次发帖到论坛。

var userLocation=document.getElementById("location");
var latitude1;
var longitude1;

//Program gets user location and divides US into 32 sections, and based on the location sets and outputs if the specefic energy type is good for the users location

window.onload = function () {
    if (navigator.geolocation) {
        setLat()
        setLon()
        displayEnergy()
    }
    else
        userLocation.innerHTML = "GeoLocation is not supported by this browser";
}

function setLat() {
    function displayLocation(position) {
        latitude1 = position.coords.latitude;
    }

    navigator.geolocation.getCurrentPosition(displayLocation);
}

function setLon() {
    function displayLocation(position) {
        longitude1 = position.coords.longitude;
    }

    navigator.geolocation.getCurrentPosition(displayLocation);
}

function getSection() {
    var lat, lon;

    if (longitude1<=-65&&longitude1>-75)
        lat="a";
    else if (longitude1<=-75&&longitude1>-85)
        lat="b";
    else if (longitude1<=-85&&longitude1>-95)
        lat="c";
    else if (longitude1<=-95&&longitude1>-105)
        lat="d";
    else if (longitude1<=-105&&longitude1>-115)
        lat="e";
    else if (longitude1<=-115&&longitude1>-125)
        lat="f";

    if (latitude1>=25&&latitude1<30)
        lon="a";
    else if (latitude1>=30&&latitude1<35)
        lon="b";
    else if (latitude1>=35&&latitude1<40)
        lon="c";
    else if (latitude1>=40&&latitude1<45)
        lon="d";
    else if (latitude1>=45&&latitude1<50)
        lon="e";

    //Alaska and Hawaii
    else if (latitude1>=50&&latitude1<75&&longitude1<=-140&&longitude1>-170){
        lat="g";
        lon="g";
    }
    else if(latitude1>=10&&latitude1<30&&longitude1<=-150&&longitude1>-165){
        lat="h";
        lon="h";
    }

    var section=lon+lat;

    return section;
}

function pageIs() {
    //What energy is the current page displaying, utilizes empty div on each page
    var page;

    if (document.getElementById("pageSolar"))
        page="solar";
    else if(document.getElementById("pageWind"))
        page="wind";
    else if(document.getElementById("pageGeo"))
        page="geo";
    else if(document.getElementById("pageHydro"))
        page="hydro";

    return page;
}

function displayEnergy() {
    var solarE, windE, geoE, hydroE;
    //////////////////////////////////////////////////////////////////////////////////

    //Is solar energy a good choice
    if (getSection()=="ba" ||
        getSection()=="bb" ||
        getSection()=="bc" ||
        getSection()=="ca" ||
        getSection()=="cb" ||
        getSection()=="cc" ||
        getSection()=="da" ||
        getSection()=="db" ||
        getSection()=="dc" ||
        getSection()=="dd" ||
        getSection()=="eb" ||
        getSection()=="ec" ||
        getSection()=="fb" ||
        getSection()=="fc" ||
        getSection()=="hh")

        solarE=true;
    else
        solarE=false;

    //Is wind energy a good choice
    if (getSection()=="ad" ||
        getSection()=="ba" ||
        getSection()=="bb" ||
        getSection()=="bd" ||
        getSection()=="cb" ||
        getSection()=="cd" ||
        getSection()=="ce" ||
        getSection()=="da" ||
        getSection()=="db" ||
        getSection()=="fb" ||
        getSection()=="fc" ||
        getSection()=="fd" ||
        getSection()=="fe")

        windE=true;
    else
        windE=false;

    //Is geothermal energy a good choice
    if (getSection()=="db" ||
        getSection()=="dc" ||
        getSection()=="dd" ||
        getSection()=="de" ||
        getSection()=="eb" ||
        getSection()=="ed" ||
        getSection()=="ee" ||
        getSection()=="fb" ||
        getSection()=="fc" ||
        getSection()=="hh")

        geoE=true;
    else
        geoE=false;

    //Is hydroelectric energy a good choice
    if (getSection()=="ad" ||
        getSection()=="ba" ||
        getSection()=="bb" ||
        getSection()=="bc" ||
        getSection()=="bd" ||
        getSection()=="cb" ||
        getSection()=="cd" ||
        getSection()=="ce" ||
        getSection()=="da" ||
        getSection()=="ec" ||
        getSection()=="ed" ||
        getSection()=="fb" ||
        getSection()=="fc" ||
        getSection()=="fd" ||
        getSection()=="gg" ||
        getSection()=="hh")

        hydroE=true;
    else
        hydroE=false;

    ////////////////////////////////////////////////////////////////////////////////

    if (pageIs()=="solar"&&solarE===true)
        userLocation.innerHTML="Based on your location, solar energy would be a good option";
    else if (pageIs()=="solar"&&solarE===false)
        userLocation.innerHTML="Based on your location, solar energy would not be a good option";
    else if (pageIs()=="wind"&&windE===true)
        userLocation.innerHTML="Based on your location, wind energy would be a good option";
    else if (pageIs()=="wind"&&windE===false)
        userLocation.innerHTML="Based on your location, wind energy would not be a good option";
    else if(pageIs()=="geo"&&geoE===true)
        userLocation.innerHTML="Based on your location, geothermal energy would be a good option";
    else if(pageIs()=="geo"&&geoE===false)
        userLocation.innerHTML="Based on your location, geothermal energy would not be a good option";
    else if(pageIs()=="hydro"&&hydroE===true)
        userLocation.innerHTML="Based on your location, hydroelectric energy would be a good option";
    else if(pageIs()=="hydro"&&hydroE===false)
        userLocation.innerHTML="Based on your location, hydroelectric energy would not be a good option";
}

我无法获取要返回的JavaScript位置

0 个答案: