chainFunctions.js

/* Class like object, chaining functions, arguments, setter/getter*/
function SimpleWidget(spec) {
    var instance = {};
    var headline, description;

    instance.render = function() {
        var div = d3.select('body').append("div");
        
        div.append("h3").text(headline);
        
        div.attr("class", "box")
        .attr("style", "color:" + spec.color)
        .append("p")
        .text(description);
        
        return instance
    };
    
    instance.headline = function(h) {
        if (!arguments.length) return headline;
        headline = h;
        return instance;
    };
    
    instance.description = function(d) {
        if (!arguments.length) return description;
        description = d;
        return instance;
    };
    
    return instance;
}
        .append("p")
        .text(description);
        
        return instance
    };
    
    instance.headline = function(h) {
        if (!arguments.length) return headline;
        headline = h;
        return instance;
    };
    
    instance.description = function(d) {
        if (!arguments.length) return description;
        description = d;
        return instance;
    };
    
    return instance;
}

StudyNoteJS.md

My Javascript study notes.