Underscore.JS isError方法

_.isError(object)

var _ = require('underscore');

//Example 1: Check if argument passed is an error
try{
   throw new error("Test");
}catch(err){
   console.log(_.isError(err));
}

//Example 2: Check if argument passed is an error
console.log(_.isError('Test'));

>node tester.js

true
false