var a=function(a,c){if(a)c(a)}
undefined
a(true,(console.log))
VM177:2 Uncaught TypeError: Illegal invocation(…)a @ VM177:2(anonymous function) @ VM186:2InjectedScript._evaluateOn @ VM116:875InjectedScript._evaluateAndWrap @ VM116:808InjectedScript.evaluate @ VM116:664
a(true,console.log)
VM177:2 Uncaught TypeError: Illegal invocation(…)a @ VM177:2(anonymous function) @ VM188:2InjectedScript._evaluateOn @ VM116:875InjectedScript._evaluateAndWrap @ VM116:808InjectedScript.evaluate @ VM116:664
a(true,()=>console.log)
undefined
a(true,(e)=>console.log(e))
VM190:2 true
undefined
a(false,(e)=>console.log(e))
undefined
a(true,(e)=>console.log(e))
VM192:2 true
undefined
js, lambada? 在chrome和node下可以使用
原文：http://www.cnblogs.com/hualiu0/p/5264255.html