Global variable is not updated javascript

Question

I have globe.js  demo1.html  demo2.html here im declared var a = 10; in the global and then i reassigned the value of variable a in the demo1 window.a = 20 then i have anchor tag click to redirect to demo2 now im checking the value of a here alert(a); still it shows the global variable value 10 but i have been reassigned in demo1 showing old value of global please help me to find out...

Rajkiran Swain · Answer

https://stackoverflow.com/questions/13016498/javascript-global-variable-is-not-updating

Manikandan Murugesan · Answer

Just reference the variable inside the function; no magic just use it's name. If it's been created globally then you'll be updating the global variable. You can override this behaviour by declaring it locally using var  but if you don't use var  then a variable name used in a function will be global if that variable has been declared globally. That's why it's considered best practice to always declare your variables explicitly with var . Because if you forget it you can start messing with globals by accident. It's an easy mistake to make. But in your case this turn around and becomes an easy answer to your question. ar a = 10; myFunction(); function myFunction(){ a = 20; } alert( Value of 'a' outside the function  + a); //outputs 20

Sundar · Answer

Try like this Page One ========== window.onload = function() { var getInput = prompt(Hey type something here: ); localStorage.setItem(storageNamegetInput); } On Page Two ===================== window.onload = alert(localStorage.getItem(storageName)); Thanks in advance