JSFiddle - React, Tailwind, and code Playground

by kaleeswaran

HTML

<h2>Form</h2>
<form action="" method="post">
    <div id="formDiv">
First Name:<input type="text" name="Fname" maxlength="12" size="12"/> <br/>
Last Name:<input type="text" name="Lname" maxlength="36" size="12"/> <br/>
Gender:<br/>
Male:<input type="radio" name="gender" value="Male"/><br/>
Female:<input type="radio" name="gender" value="Female"/><br/>
Favorite Food:<br/>
Steak:<input type="checkbox" name="food[]" value="Steak"/><br/>
Pizza:<input type="checkbox" name="food[]" value="Pizza"/><br/>
Chicken:<input type="checkbox" name="food[]" value="Chicken"/><br/>
<textarea wrap="physical" cols="20" name="quote" rows="5">Enter your favorite quote!</textarea><br/>
Select a Level of Education:<br/>
<select name="education">
<option value="Jr.High">Jr.High</option>
<option value="HighSchool">HighSchool</option>
<option value="College">College</option></select><br/>
Select your favorite time of day:<br/>
<select size="3" name="TofD">
<option value="Morning">Morning</option>
<option value="Day">Day</option>
<option value="Night">Night</option></select>
<p><input type="submit" /></p>
    </div>
</form>
<h2>JSON</h2>
<pre id="result">
</pre>

CSS

form {
    line-height: 2em;
}
p {
    margin: 5px 0;
}
h2 {
    margin: 10px 0;
    font-size: 1.2em;
    font-weight: bold
}
#result {
    margin: 10px;
    background: #eee;
    padding: 10px;
    height: 40px;
    overflow: auto;
}

JavaScript

$.fn.serializeObject = function()
{
    var o = {};
    var a = this.serializeArray();
    $.each(a, function() {
        if (o[this.name] !== undefined) {
            if (!o[this.name].push) {
                o[this.name] = [o[this.name]];
            }
            o[this.name].push(this.value || '');
        } else {
            o[this.name] = this.value || '';
        }
    });
    return o;
};

$.fn.toJSON = function(options){

        options = $.extend({}, options);

        var self = this,
            json = {},
            push_counters = {},
            patterns = {
                "validate": /^[a-zA-Z][a-zA-Z0-9_]*(?:\[(?:\d*|[a-zA-Z0-9_]+)\])*$/,
                "key":      /[a-zA-Z0-9_]+|(?=\[\])/g,
                "push":     /^$/,
                "fixed":    /^\d+$/,
                "named":    /^[a-zA-Z0-9_]+$/
            };


        this.build = function(base, key, value){
            base[key] = value;
            return base;
        };

        this.push_counter = function(key){
            if(push_counters[key] === undefined){
                push_counters[key] = 0;
            }
            return push_counters[key]++;
        };

        $.each($(this).serializeArray(), function(){

            // skip invalid keys
            if(!patterns.validate.test(this.name)){
                return;
            }

            var k,
                keys = this.name.match(patterns.key),
                merge = this.value,
                reverse_key = this.name;

            while((k = keys.pop()) !== undefined){

                // adjust reverse_key
                reverse_key = reverse_key.replace(new RegExp("\\[" + k + "\\]$"), '');

                // push
                if(k.match(patterns.push)){
                    merge = self.build([], self.push_counter(reverse_key), merge);
                }

                // fixed
                else if(k.match(patterns.fixed)){
                    merge = self.build([], k, merge);
               ...