您如何安全地将会话变量传递给javascript？

Question

I have this account balance variable:

$_SESSION["bitcoin-balance"] = 0;

I need to pass it to a javascript function, which will append the variable in a URL to send to my RESTAPI.

function getAccountBalace(username, hash){
//Send to restapi
}

How could I do this? Normally, I would just make PHP echo javascript code with the parameters, when the page loads, but I need this function to run when a user clicks a button; and I cannot have the web page to reload.

Answer 1

尝试这个

<button onclick="myFunction('<?php echo $_SESSION["bitcoin-balance"]; ?>');" />