SO - 19120905

by sando ahmad

HTML

<select name="one" id="one">
    <option value="0">Select Hotel</option>
    <option value="3000">Nirvana</option>
    <option value="6000">Laguna</option>
    <option value="9000">Palm beach</option>
</select>
<br />
<br />
<select name="two" id="two">
    <option>Room Type</option>
</select>
<br/>
<br/>
<p>
<input type="checkbox" name="tri" id="tri" value="50"/>
    <label >additional Price</label>
</p>
<br/>
<p>
<input type="checkbox" name="four" id="four" value="100"/>
    <label >additional Price</label>
</p>
<div id="total"></div>

JavaScript

// arrays instead of comma separated list and added base key
var data = {
    "0": ["Select Room type"],
        "3000": ["economist_0", "executive_465", "businesse_984"],
       "6000": ["economist_200", "executive_700", "businesse_800"],
        "9000": ["economist_400", "executive_800", "businesse_900"]
}

$("#one").change(function () {
    var first = $(this),
        second = $("#two"),
        third = $("#tri"),
         third = $("#four"),
        key = first.val(),
        // instead of the original switch code
        vals = data[key] == undefined ? data.base : data[key],
        html = [];
    // create insert html before adding
    $.each(vals, function (i, val) {
        var v = val.split('_');
        html.push('<option value="' + v[1] + '">' + v[0] + '</option>')
    });
    // no need to empty the element before adding the new content
    second.html(html.join());
});

$("#one,#two,#tri,#four").change(function () {
    
    var val1 = parseInt($('#one').val()) || 0,
        val2 = parseInt($('#two').val()) || 0,
        val3 = parseInt($('#tri').val()) || 0,
        val4 = parseInt($('#four').val()) || 0;
    
    if($('#tri').is(':checked'))
        val3 = parseInt($('#tri').val());
    else if($('#four').is(':checked'))
        val4 = parseInt($('#four').val());
    else
    val3 = 0;
    val4 = 0;
    console.log(val1);
    console.log(val2);
    console.log(val3);
     console.log(val4);
    $('#total').text(val1 + val2 + val3 + val4)
})