How can I use js eval to return a value?

Question

I need to evaluate a custom function passed from the server as a string. It\'s all part of a complicated json I get, but anyway, I seem to be needing something along the lin

Answer 1

var customJSfromServer = "2+2+2;"
var evalValue = eval(customJSfromServer);
alert(evalValue) ;// should be "6";