Solutions: Jasper - JavaScript, Assessment of Skills with Peer Evaluation and Review

jasper-solutions.js

/* global Jasper */

/* http://kalisjoshua.github.io/Jasper/ */

Jasper('start');

// "Pass in a function that returns true."
Jasper(function() {
    return true;
});

// "Provide an object with two properties: 'a' and 'b'."
Jasper({
    a: 1,
    b: 1
});

// "Pass a function that throws an error with message 'up'"
Jasper(function() {
    throw new Error("up");
});

// "Send a JSON string that has a property 'do' with the value 'good'"
Jasper('{"do":"good"}');

// "Write a function to sum any number of number arguments."
Jasper(function addany() {
    var idx, sum = 0;
    for (idx in arguments) {
        sum += arguments[idx];
    }
    return sum;
});

// "Write a function that takes an argument and returns a function that returns that argument."
Jasper(function(v) {
    return function() {
        return v;
    };
});

// "Execute Jasper with a context that matches its argument."
Jasper.call(this, this);

// "Add a 'jasper' method to the prototype of the object passed to the function your write."
Jasper(function(obj) {
    obj.prototype.jasper = function() {};
});

// reset
Jasper('reset');