global-var.js

来自「这是《JavaScript学习源代码》一书的源代码」· JavaScript 代码 · 共 19 行

// create a global variable
var stored_num;

// a function to call a second function 
// and display a returned result
function call_alert( num )
{
  stored_num = num;
  make_triple();
  alert( "The Value Is " + stored_num );
}

// a function to double a value
// and return the result to the caller
function make_triple()
{
  stored_num = stored_num + stored_num + stored_num;
}