Console.log is not a function in nodejs 6.9.1

Question

I got a strange problem when I try to understand the code in Javascript: The Good Parts. I am trying to use console.log () to print something, but I just get a TypeError, my code is here:

Function.prototype.method=function(name,func){
    this.prototype[name]=func;
    return this;
}

Function.method('bind',function(that){
    var method=this;
    var slice =Array.prototype.slice;
    var args=slice.apply(arguments,[1]);

    console.log(that);//error: console.log is not a function

    return function(){
        return method.apply(that,args.concat(slice.apply(arguments,[0])));
    };
});

var x=function(){
    return this.value;
}.bind({value:666});

console.log(x());

Run codeHide result

and an error message appears:

/home/wz/code/js/c.js:14
    console.log(that);//error: console.log is not a function
            ^

TypeError: console.log is not a function
    at Function.<anonymous> (/home/wz/code/js/c.js:14:13)
    at new Console (console.js:34:23)
    at console.js:100:18
    at NativeModule.compile (bootstrap_node.js:497:7)
    at Function.NativeModule.require (bootstrap_node.js:438:18)
    at get (bootstrap_node.js:254:34)
    at Function.<anonymous> (/home/wz/code/js/c.js:14:5)
    at Object.<anonymous> (/home/wz/code/js/c.js:23:3)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)

Shell 已返回1

It is so interesting when I run the fragment in stackoverflow, it works as I expected ... So, it seems that there are some errors in my native environment?

I'm trying to use fs to save console.log to a file to find out what is actually in my code, I change the code to:

fs=require('fs');
Function.prototype.method=function(name,func){
    this.prototype[name]=func;
    return this;
}

Function.method('bind',function(that){
    var method=this;
    var slice =Array.prototype.slice;
    var args=slice.apply(arguments,[1]);

    fs.writeFile('a.txt',String(console.log));
    //console.log(that);//error: console.log is not a function

    return function(){
        return method.apply(that,args.concat(slice.apply(arguments,[0])));
    };
});

var x=function(){
    return this.value;
}.bind({value:666});

console.log(x());

and in a.txt:

function (){
        return method.apply(that,args.concat(slice.apply(arguments,[0])));
    }

So surprisingly, console.log becomes the returned object ... I was completely confused. I tried node 6.9.1 and 4.6.1, and got the same result. And I use nvm to control my version of node

Answer 1

console - . , :

console.log = console.log || function(message) { alert(message);};

, .