echo一个javascript变量

Question

What is the best way to echo the variable get_parestotal?

Some help please! Thank you

  <script type="text/javascript">
 $(document).ready(function(){
                    var get_parestotal = 0
                $(".parestotal").each(function(){
                    get_parestotal += parseFloat($(this).text());
                });
                alert(get_parestotal);

            });

</script>



<? echo json_encode($get_parestotal); ?>

Answer 1

You can log variables and so on in the console.

eg:

console.log(get_parestotal);

You can even concatenate witht he use of + console.log('This is your variable'+get_parestotal)

You can even add styling to your log (color, background-color,...):

console.log('%cThis is your variable'+get_parestotal+'!','color:green;');

There are some alternatives to console.log() you could use:

 console.warn();
 console.info();
 console.error();
 console.debug();

Answer 2

You can either do alert(myvar) or console.log(myvar) .

Caveat: console.log is only supported in certain browsers...see the link.

Answer 3

如果你想要一个控制台输出而不是使用console.log(get_parestotal);