从Chrome开发者控制台调用JavaScript函数(Call javascript function from chrome developer console)

 非常简单的脚本： 
 
function foo(){
    return "bar"
}

console.log( foo() );
 
 安慰： 
 
> bar // sanity test that proves everything's working
> foo(); // this guy is key!
> ReferenceError: foo is not defined
 
 我应该如何调用foo（）; 用于调试和实验目的？ 
 
 这不是一种习惯吗？ 我喜欢使用IRB / Rails控制台来验证我的ruby代码，并希望对JavaScript执行相同的操作 
 
 http://jsfiddle.net/m2muL/ 

Very simple script:
 
function foo(){
    return "bar"
}

console.log( foo() );
 
console:
 
> bar // sanity test that proves everything's working
> foo(); // this guy is key!
> ReferenceError: foo is not defined
 
How should I call foo(); for debugging and experimentation purposes?
 
Is this not a practise? I love using IRB / Rails Console to verify my ruby code and want to do the same with JavaScript
 
http://jsfiddle.net/m2muL/

原文：https://stackoverflow.com/questions/23641434