call javascript object method with a variable

Question

i am new to object oriented javascript. I have a variable whose value i would like to use to call an object's method. like this..

var foo = {     bar: function() {},     barr: function() {} } 

now there is a variable whose value can be any of the two method's names bar and barr i want to call them with something like

var myvar = 'bar'; foo.{myVar}(); 

Answer 1

So I assume you want to call the appropriate function dynamically based on a string. You can do something like this:

var myVar = 'bar'; foo[myVar](); 

Or you can also use eval but this is riskier (prone to injection attack) and slower (don't do this! :P):

var myVar = 'bar'; eval('foo.' + myVar + '()');