javascript - variable is already defined -

sometime need replace variable value another

so use method

var $$test = "first",     $$test = "second";

the code work fine use jsfiddle jshint button check error on javascript (it helped me lot)

but got error '$$test' defined

enter image description here

so ideal method re define variable

thank :)

you're getting error because you're declaring same variable twice.

var = foo, = bar;

is same as:

var = foo; var = bar;

just break code in 2 lines, , won't warning. this:

var = foo; = bar;

also notice if declare variable value, , right after change value, first line noop.

Three