在其他html页面上使用Javascript全局数组变得未定义(Javascript global array becomes undefined when used on other html page)

 我已经在firstpage.hmtl的脚本中声明了一些全局变量以及全局数组，并且这些全局变量和数组在本页面的任何地方都可以访问，并且可以在此页面上正常工作。 我想在应用程序的所有页面上使用window.arr []的值，但它在所有其他应用程序页面上显示为未定义 
 
 当我从firstpage.html重定向到secondpage.html时，我尝试获取这些全局变量的值，但这里出现问题，因为只是window.name在第二页上工作，而不是每个全局变量的值都未定义 
 
 我已经为这些全局变量尝试了很多名字，但其中只有一个名字是window.name，除了一切都是未定义的。 
 
 firstpage.html 
 
 
    window.name = "john";
    window.car = "BMW";
    window.arr = [];

    $(".hotels").click(function () {
            arr.push('hotels');
            console.log("name = " + window.name); //working, prints "name = john"
            console.log("car = " + window.car); //working, prints "car = BMW"
            console.log("arr = " + window.arr); //working, prints "arr = hotels"
    }
 
 secondpage.html 
 
 
$(document).ready(function () {
    console.log("arr = " + window.arr); //not working here, prints "arr = undefined"
    console.log("car = " + window.car); //not working here, prints "car = undefined"
    console.log("name = " + window.name); //working, prints "name = john"

});

I have declared some global variables along with global array in my firstpage.hmtl's script and these global variables and array are accessible everywhere on this page and working fine on this page. And I want to use the values of window.arr[] on all pages of the application but it is showing undefined on all other pages of application
 
When I redirect from firstpage.html to secondpage.html then I try to get the values of these global variables but here the issue arise because just window.name is working on second page other than that every global variable's value is undefined
 
I have tried many names for these global variables but just one of them is working which is window.name other than that everything is undefined.
 
firstpage.html
 
 
    window.name = "john";
    window.car = "BMW";
    window.arr = [];

    $(".hotels").click(function () {
            arr.push('hotels');
            console.log("name = " + window.name); //working, prints "name = john"
            console.log("car = " + window.car); //working, prints "car = BMW"
            console.log("arr = " + window.arr); //working, prints "arr = hotels"
    }
 
secondpage.html
 
 
$(document).ready(function () {
    console.log("arr = " + window.arr); //not working here, prints "arr = undefined"
    console.log("car = " + window.car); //not working here, prints "car = undefined"
    console.log("name = " + window.name); //working, prints "name = john"

});

原文：https://stackoverflow.com/questions/48409406