Code Repositories: Javascript

Showing posts with label Javascript. Show all posts

Monday, March 28, 2011

Javascript - Like Google

index.php

<html>

<head>

<title>

Javascript Update

</title>

</head>

<body>

<select id="name">

    <option value="aura">Aura</option>

    <option value="luna">Luna</option>

    <option value="lady">Lady</option>

</select>

<input type="button" value="Get" onclick="getData()"/>

<br/>

<input type="button" value="Last Name" onclick="lastName()"/>

<input type="button" value="City" onclick="city()"/>

<input type="button" value="Age" onclick="age()"/>

<script>

function getData(){

    var script = document.createElement('script');

    var name = document.getElementById('name');

    var head = document.getElementsByTagName('head')[0];

    head.appendChild(script);

    script.setAttribute('src','hello.php?fname='+name.value);

    alert('');

}

function lastName(){

    alert(data.lname);

}

function city(){

    alert(data.city);

}

function age(){

    alert(data.age);

}

</script>

</body>

</html>

hello.php

<?php

    $data = array(

        'luna' => array('maya','denpasar',24),

        'lady' => array('gaga','new york',24),

         'aura' => array('kasih','jakarta',25),

    );

    $fname = $_GET['fname'];

    $output = 'var data = {};';

    $out = array();

    foreach($data as $key => $value){

        if(strcmp($fname, $key) == 0){

            foreach($value as $v){

                $out[] = $v;

            }

        }

    }

    $output .= 'data.lname = "'.$out[0].'";';

                $output .= 'data.city = "'.$out[1].'";';

                $output .= 'data.age = "'.$out[2].'";';

    header('Content-type: text/javascript');

    echo $output;

?>

Friday, March 25, 2011

HTML5 - Lucia

var ctx = document.getElementById('canvas').getContext('2d');

grad = ctx.createLinearGradient(0,30,280,30);

grad.addColorStop(0.1, '#af8');

grad.addColorStop(0.5, '#fc0');

grad.addColorStop(1.0, '#faf');

ctx.fillStyle = grad;

ctx.fillRect(0,0,280,60)

ctx.fillStyle = '#a5f';

ctx.font = '30px arial';

ctx.fillText('Lucia Corporation',20, 40);

The above code will finish in like below:

Friday, March 18, 2011

PHP - Using SQLite3

/**

 * index.php

*/

<html>

<head>

<script src="jquery.js"></script>

<script>

function save(){

    var ajax = new XMLHttpRequest();

    var name = document.getElementById('name');

    var city = document.getElementById('city');

    var age = document.getElementById('age');

    var mode = 'write';

<div id="satu">
<h2>Technical Specification</h2>
<div id="list">

<div class="item">
<h3>The Current Priorities</h3>
<ul><li>Skripsi</li>
<li>Web Portfolio</li>
</ul>
</div>

<div class="item">
<h3>The Next Priorities</h3>
<ul><li>Jobs in hacker centric place</li>
<li>Get to the next stage of hacking skills</li>
<li>Get the certificates of Hacking</li>
</ul>
</div>

<div class="item">
<h3>In Americas</h3>
<ul><li>Jobs in NVidia</li>
<li>Building part-time technology business</li>
</ul>
</div>

<div class="item">
<h3>The Next Ahead</h3>
<ul><li>Big Business</li>
<li>Nta Fund</li>
</ul>
</div>

<style>
html, body, div, h1, h2, h3 { margin: 0px; }
ol, ul { list-style: square; padding: 0 0 0 15px; }
html { background: #eee; color: #333;}
#satu { margin: 20px; padding: 20px; -moz-box-shadow: 0 0 1px #aaa; background: white; -moz-border-radius: 4px; font: 12px sans-serif; }

#satu h2 { border-bottom: 1px solid #aaa; padding: 0 0 10 0px; margin: 0 0 20px; }
.item { float: left; width: 50%; margin: 0 0 15px; }
.item li { margin: 0 0 5px; }

</style>

<div style="clear: both; "></div>
</div>
</div>

Wednesday, January 19, 2011

Breadcum

<p>

    <a href="javascript:getCountry()">Home</a>

    <span id="country"></span>  

    <span id="state"></span>

    <span id="city"></span>

    <span id="company"></span>

</p>

<div id="list"></div>

<script> 

var countries = ["usa","indonesia","japan"];

var states = [

  ["california", "new york", "texas"],

  ["east java", "south sumatra", "west java"],

  ["honsu", "kyusu"]

];

var cities = [

[

    ["mountain view", "palo alto", "san jose"],

    ["nyc", "columbia", "rokefeller"], 

    ["dallas", "austin"]

],

[

    ["surabaya", "malang", "jember"],

    ["medan", "natal", "batak"],

    ["bandung", "cirebon", "bogor"]

],

[

    ["kyoto","osaka"],

    ["tokyo"]

]

];

var companies = [

[

[

      ["<h1>HeadQuarter of Google</h1>"],  

      ["<h1>Yahoo Headquarter</h1>"], 

      ["<h1>Adobe Base Camp</h1>"]

],

[

      ["un is here","bloomberg is here"],

      ["univ of columbia"],

      ["rockefeller center"]

],

[

      ["dell may be hee","large airport is here"],

      ["like name of you"]

]

],

[

[

      ["unair is here","its also"],

      ["unibraw is here","umm also"],

      ["just for unej"]

],

[

      ["usu"],

      ["none"],

      ["none also"]

],

[

      ["itb","unpad"],

      ["none"],

      ["ipb"]

]

],

[

[

      ["none"],

      ["none also"]

],

[

      ["tokyo univ"]

]

]

];

function getCountry(){

    var list = document.getElementById('list');

    list.innerHTML = "";

    for(i=0;i<countries.length;i++){

        list.innerHTML = list.innerHTML +

          "<a href='javascript:getStates("+i+")'>"+ 

          countries[i] + "</a><br/>";

}

    var country = document.getElementById('country');

    country.innerHTML = ""; 

    var state = document.getElementById('state');

    state.innerHTML = "";

    var city = document.getElementById('city');

    city.innerHTML = "";

}

function getStates(k){

    var list = document.getElementById('list');

    list.innerHTML = "";

    for(i=0;i<states[k].length;i++){

        list.innerHTML = list.innerHTML + 

          "<a href='javascript:getCities(" +k+ "," +i+ ")'>" +

          states[k][i] + "<br/>";

}

    var country = document.getElementById('country');

    country.innerHTML = ">> <a  href='javascript:getCountry()'>"+

       "Country</a>"; 

    var state = document.getElementById('state');

    state.innerHTML = "";

    var city = document.getElementById('city');

    city.innerHTML = "";

}

function getCities(k,l){

    var list = document.getElementById('list');

    list.innerHTML = "";

    for(i=0;i<cities[k][l].length;i++){

    list.innerHTML = list.innerHTML + 

      "<a href='javascript:getCompanies(" +k+ "," +l+ ","

      +i+ ")'>"+ cities[k][l][i] + "<br/>";

}

    var state = document.getElementById('state'); 

    state.innerHTML = ">> <a href='javascript:getStates(" +k+ 

      ")'>States</a>"; 

    var city = document.getElementById('city');

    city.innerHTML = "";

}

function getCompanies(k,l,m){

    var list = document.getElementById('list');

    list.innerHTML = "";

    for(i=0;i<companies[k][l][m].length;i++){

        list.innerHTML = list.innerHTML + "<h1>" + 

        companies[k][l][m][i] + "</h1><br/>";

}

    var state = document.getElementById('city'); 

    city.innerHTML = ">> <a href='javascript:getCities(" +k+ 

        "," +l+ ")'>Cities</a>";

}

getCountry()

</script>     

<style>

    a { text-decoration: none; text-transform: capitalize;}

    h1 { text-transform: capitalize; }

</style>   

Thursday, January 6, 2011

Pagination Using Javascript

Wednesday, January 5, 2011

Ajax Presentation

<div id="container">

    <div id="one">

        <a href="javascript:lol(0)">Home</a> | 

        <a href="javascript:lol(1)">Page</a> | 

        <a href="javascript:lol(2)">Setting</a>

        <div id="logout" style="display:inline; float: right; ">

            <a href="javascript:">Log Out</a>

        </div>

    </div>

    <div id="two">

    </div>

    <div id="three" style="width: 100%; height: 50px;">

    </div>

</div>

<style>

    div { margin: 0px; }

    body { font-family: arial; font-size: 12px; }

    a { text-decoration: none; }

    a:hover { text-decoration: underline; }

    #one { border-bottom: 1px solid #af5; padding: 0 0 3 0px;

    margin: 0 0 5 0px; }

</style>

<script>

var home = [

    "<a href=\"javascript:enter('fuchsia')\">Indonesia</a> | "

    +"<a href=\"javascript:enter('red')\">Malaysia</a> | "

    +"<a href=\"javascript:enter('cornsilk')\">Filipine</a>",

    "<a href=\"javascript:enter('pink')\">New Page</a> | "

    +"<a href=\"javascript:enter('yellow')\">Edit Page</a>",

    "<a href=\"javascript:enter('brown')\">Template</a> | "

    +"<a href=\"javascript:enter('lime')\">Layout</a>"

    ];

function lol(p){

    for(i=0;i<home.length;i++){

        if(i==p)

            document.getElementById('two').innerHTML = home[i];

    }

}  

function enter(dd){

    document.body.style.backgroundColor = dd;

}

</script>

Sunday, January 2, 2011

Traffic Animation Using JS

/**

 * This framework provide simple traffic animation using

 * javascript style programming.

*

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : January 2, 2011

 * @version : 1.0

*/

<h1>Traffic Animation</h1>

<div id='satu'></div>

<script>

function TA(w,h){ 

    this.ta = document.createElement('div');

    this.ta.setAttribute('style','width:'+w+'; height:'+h+';

     padding: 2px; border:1px solid #aaa; position:relative;

     margin:0 auto;overflow: hidden;');

}

TA.prototype.create = function(){

    return this.ta;

};

TA.prototype.setMobil = function(lol){

    this.ta.appendChild(lol);

};

function Mobil(c,w,h){

    this.ta = document.createElement('div');

    this.ta.setAttribute('style','width:'+w+'; height: '+h+';

      background: '+c+'; position: relative; margin: 2px; ');

    this.i = 0;

}

Mobil.prototype.create = function(){

    return this.ta;

};

Mobil.prototype.run = function(s){

    this.ta.style.left = this.i;

    this.i = this.i + 1;

    var lol =  this;

    setTimeout(function(){lol.run(s);},1000/s); 

};

var satu = document.getElementById('satu');

var lol = new TA('80%');

var a = new Mobil('red',30,10);

var b = new Mobil('blue',20,10);

var c = new Mobil('green',25,10);

var d = new Mobil('brown',25,10);

a.run(50); 

b.run(70);

c.run(260);

d.run(40);                                                                         

lol.setMobil(a.create());

lol.setMobil(b.create());

lol.setMobil(c.create());

lol.setMobil(d.create());

satu.appendChild(lol.create());

</script>

Thursday, December 30, 2010

Grouping Algorithm Using Javascript

/**
 * @author  : irfanudin ridho
 * @email   : irfan.ub@gmail.com
 * @date    : December 29,2010
 * @version : 1.0
 *
 * This function will provide distinct selection algorithm. 
 */

/**
 * Constructor service
 * @param data array of data
 */

function GroupingAlgorithm(data){

    this.data = data;

}



/**
 * a mehtod that provide base service to slice the data.
 * var data = [1,2,2,3,1,2]
 *          = [2,2,3,2]
 *          = [3]
 *          = []
 * @param varData array of data
 * @return sliced array
 */

GroupingAlgorithm.prototype.first = function(varData){

    var value = varData[0];

    var newData = new Array();

    var k = 0;

    for(i=1;i<varData.length;i++){

        if(varData[i]!=value){

            newData[k]=varData[i];

            k++;

        }

    }

    return newData;

};





/**
 * This function will do like what happend at SELECT DISTINCT 

 * in MySQL.
 * @return array unsorted distinct value;
 */

GroupingAlgorithm.prototype.getDistinctValue = function(){

    var rest = true;

    var distinctValue = new Array();

    var d = 0;

    var copyData = this.data;

    while(rest){

        distinctValue[d]=copyData[0];

        copyData = this.first(copyData);

        d++;

        if(copyData.length==0){

            rest = false;

        } 

    }

    return distinctValue;

};

/**

 * A method to know how many occurence for specified value

*

 * @return array of data

 */

GroupingAlgorithm.prototype.getTotalNumber = function(){

    var distinctData = this.getDistinctValue();

    var nTimes = new Array();

    for(i=0;i<distinctData.length;i++){

        var n = 0;

        for(j=0;j<this.data.length;j++){

            if(distinctData[i]==this.data[j]){

                n++;

            }

        }

        nTimes[i]=n;

    }

    return nTimes;

};

Selection Algorithm Using Java

/**
 * Selection Algorithm
 * This function provide service for selection algorithm.
 *
 * @author  : irfanudin ridho
 * @email   : irfan.ub@gmail.com
 * @date    : December 29, 2010
 * @version : 1.0
 */

/**
 * Constructor service
 * @param data array of data
 */

function DataAlgorithm(data){

    this.data = data;

}


/**
 * function to get min value from the data
 * @return min value of the data
 */

DataAlgorithm.prototype.getMinValue = function(){

    return this.data[this.getMinValueIndex()];

};

/**
 * function to get max value from the data
 * @return max value of the data
 */

DataAlgorithm.prototype.getMaxValue = function(){

    return this.data[this.getMaxValueIndex()];

};

/**
 * function to get index of the min value
 * @return number index of the min value
 */

DataAlgorithm.prototype.getMinValueIndex = function(){

    var minIndex = this.data[0];

    for(i=0;i<this.data.length;i++){

        if(this.data[i+1]<this.data[minIndex]){

            minIndex = i+1;

        }

    }

    return minIndex;

};

/**
 * method to get index of the max value
 * @return number index of the max value
 */

DataAlgorithm.prototype.getMaxValueIndex = function(){

    var maxIndex = this.data[0];

    for(i=0;i<this.data.length;i++){

        if(this.data[i+1]>this.data[maxIndex]){

            maxIndex = i+1;

        }

    }

    return maxIndex;

};

List In Javascript

/**
 * A List of ADT. This ADT works well like list in other library.
 * 
 * @author  : irfanudin ridho
 * @email   : irfan.ub@gmail.com
 * @date    : December 31, 2010
 * @version : 1.0
 */

/**
 * Constructor service
 */

function List(){

    this.data = new Array();

}

/**
 * method to add an element to list
 *
 * @param item string,number,boolean value. element to be added
 */

List.prototype.add = function(item){

    var len = this.data.length;

    this.data[len] = item;

};

/**
 * method to remove an element from the list
 * 
 * @param item string, number or boolean as what the list contains.
 */

List.prototype.remove = function(item){

    var newData = new Array();

    var len = this.data.length;

    var k = 0;

    for(i=0;i<len;i++){

        if(this.data[i]!=item){

            newData[k] = this.data[i];

            k++;

        }

    }

    this.data = newData;

};

/**
 * method to know how many elements in the list
 *
 * @return number number of elements
 */

List.prototype.size = function(){

    return this.data.length;

};

/**
 * method to give this list as an array
 *
 * @return an array
 */

List.prototype.toArray = function(){

    return this.data;

};

Queue In Javascript

/**

 * A Queue ADT. This ADT provide functionality for FIFO 

 * data structure.
 *
 * @author  : irfanudin ridho
 * @email   : irfan.ub@gmail.com
 * @date    : December 31, 2010
 * @version : 1.0
 */

/** 
 * A constructor service.
 */

function Queue(){
    this.data = new Array();
}

/**
 * method to insert an element to the Queue
 * 
 * @param item string, number, boolean element to be inserted. 
 */
Queue.prototype.push = function(item){
    var len = this.data.length;
    var newData = new Array();
    newData[0] = item;
    for(i=0;i<len;i++){
        newData[i+1]=this.data[i];
    }
    this.data = newData;
};

/**
 * A method to remove the first item inserted.
 * 
 * @return first element of the Queue.
 */
Queue.prototype.pop = function(){
    var len = this.data.length;
    var first = this.data[len-1];
    var newData = new Array();
    for(i=1;i<len;i++){
        newData[i-1]=this.data[i];
    }
    this.data = newData;
    return first;
};

/**
 * A method to get how many elements in the Queue
 *
 * @return number number of elements.
 */
Queue.prototype.size = function(){
    return this.data.length;
};

/**
 * A method to represent this queue as an array data structure.
 *
 * @return array of data
 */
Queue.prototype.toArray = function(){
    return this.data;
}

Stack In Javascript

/**

 * An ADT of Stack. This is an implementation of LIFO 

 * data structure.

 *

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : December 31, 2010

 * @version : 1.0

 */

/**

 * A constructor service. 

 */

function Stack(){

    this.data = new Array();

}

/**

 * A method to insert an element to the top position.

 *

 * @param item string, number or boolean value to be inserted

 */

Stack.prototype.push = function(item){

    var len = this.data.length;

    this.data[len]=item;

};

/**

 * A method to get the top position from the stack. As well as

 * to remove it.

 *

 * @return the value of the top position.

 */

Stack.prototype.pop = function(){

    var len = this.data.length;

    var last = this.data[len-1];

    var newStack = new Array();

    for(i=0;i<len-1;i++){

        newStack[i]=this.data[i];

    }

    this.data = newStack;

    return last;

};

/**

 * A method to get the size of elements in the Stack.

 *

 * @return number number of elements in Stack

 */

Stack.prototype.size = function(){

     return this.data.length;

};

/**

 * A method to convert the stack to be an array representation.

 *

 * @return an array of data.

 */

Stack.prototype.toArray = function(){

     return this.data;

}

Map In Javascript

/**

 * An ADT of Map. This ADT will do functionality as 

 * the key value ADT.

 *

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : December 31, 2010

 * @version : 1.0

 */

/**

 * A constructor service.

 */

function Map(){

    this.key = new Array();

    this.value = new Array();

}

/**

 * A method to add an elements to the Map

 *

 * @param k string, number key element

 * @param v string, number, boolean value element

 */

Map.prototype.add = function(k,v){

    var len = this.key.length;

    this.key[len] = k;

    this.value[len] = v;

};

/**

 * A method to get an element as suitable for the key

 * 

 * @param k key of the element

 * @return value as suitable for the key.

 */

Map.prototype.get = function(k){

    var index = 0;

    for(i=0;i<k.length;i++){

        if(this.key[i]==k)

        index = i;

    }

    return this.value[index];

};

Manipulating Array

/**

 * This class provide functionality to manipulate array of 2

 * dimension
 *
 * @author  : irfanudin ridho
 * @email   : irfan.ub@gmail.com
 * @date    : December 31, 2010
 * @version : 1.0
 */

/**
 * A constructor service.
 */

function Arr(){



}



/**
 * A method to create a two dimensional array based on two array.
 * The format of the array is [n][2]. The first element is placed in
 * [n][0], while the second element is placed in [n][1]
 * 
 * @param f array the first array
 * @param s array the second array
 * @return two dimensional of array
 */

Arr.prototype.twoDim = function(f,s){

    if(f.length!=s.length)

        return 'must same in length';

    var twoDimm = new Array();

    for(i=0;i<f.length;i++){

        twoDimm[i] = new Array();

        twoDimm[i][0] = f[i];

        twoDimm[i][1] = s[i];

    }

    return twoDimm;

};



/**
 * A method to get the first value of the second index

 * operator [n][0]
 *
 * @param data two dimensional of array in format [n][2]
 * @return first one dimensional of array in format[n]
 */

Arr.prototype.getFirst = function(data){

    var first = new Array();

    for(i=0;i<data.length;i++){

        first[i] = data[i][0];

    }

    return first;

};

/**
 * A method to get the second value of the second index

 * operator [n][1]
 *
 * @param data two dimensional of array in format [n][2]
 * @return second one dimensional of array in format[n]
 */

Arr.prototype.getSecond = function(data){

    var second = new Array();

    for(i=0;i<data.length;i++){

        second[i] = data[i][1];

    }

    return second;

};

Grouping Algorithm

/**

 * Grouping Algorithm

 * This algorithm will do select just a distinct value of the data.

 * 

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : December 31, 2010

 * @version : 2.0

 */

/** 

 * A constructor service.

 * 

 * @param data array of data.

 */

function Grouping(data){

    this.data = data;

}

/**

 * A private method that provide slice functionality of the

 * array of data

 * 

 * @param data data to be sliced.

 * @return sliced of array

 */

Grouping.prototype.slice = function(data){

    var value = data[0];

    var newData = new Array();

    var k = 0;

    for(i=1;i<data.length;i++){

        if(data[i]!=value){

            newData[k]=data[i];

            k++;

        }

    }

    return newData;

};

/**

 * A method that gives what this class intended.

 * This gives a distinct 

 * value of array in the form of array.

 *

 * @return distinct value of array

 */

Grouping.prototype.create = function(){

    var dataValue = new Array();

    var k = 0;

    var loop = true;

    var data = this.data;

    while(loop){

        dataValue[k] = data[0];

        data = this.slice(data);

        k++;

        if(data.length==0)

            loop = false;

        }

        return dataValue; 

};

/**

 * This method provide serive on how many a value counting in the data.

 *

 * @return array counting value.

 */

Grouping.prototype.valueCounting = function(){

    var groupedData = this.create();

    var countValue = new Array();

    var data = this.data; 

    for(i=0;i<groupedData.length;i++){

        var k = 1;

        for(j=0;j<data.length;j++){

            if(groupedData[i]==data[j]){

                countValue[i]=k;

                k++;

            }

        }

    }

    return countValue;

};

/**

 * A method to map distinct value and how many occurence of

 * the value

 * in the data

 *

 * @return two dimensional array in the form [n][2]

 */

Grouping.prototype.mapping = function(){

    var data = this.data;

    var dimData = new Array();

    var value = this.create();

    var countValue = this.valueCounting();

    var len = value.length;

    for(i=0;i<len;i++){

        dimData[i] = new Array();

        dimData[i][0] = value[i];

        dimData[i][1] = countValue[i];

    }

    return dimData;

};

Tuesday, December 28, 2010

Rotating Algorithm Using JS

/**

 * This function will do rotate element of the data.

 * If the step of rotate, n, is equal length of data-1, the data

 * will be reversed.

*

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : December 29, 2010

 * @version : 1.0

*/

/**

 * @param data array of data

 * @param n number step to rotate

 * @return datas new rotated data in n step

*/

function Rotate(data,n){
    var datas = new Array();
    for(i=n;i<data.length;i++){
       datas[i] = data[i-n];
    }
    for(i=0;i<n;i++){
        datas[i]= data[data.length-1-i];
    }
    return datas;
}

Monday, December 27, 2010

Simple Substitution Cipher

/**

 * Function that provide substitution encryption and decryption

 * algorithm.

*

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : December 28, 2010

 * @version : 1.0

*/

/**

 * @param string text either plaintext or encrypted text

* /

 function SubstitutionCipher(text){

    this.text = text;

}

/**

 * @return encrypted string

 */

SubstitutionCipher.prototype.encrypt = function(){

    var encrypted = this.text.replace(/a/g,'1');

    encrypted = encrypted.replace(/e/g,'2');

    encrypted = encrypted.replace(/i/g,'3');

    encrypted = encrypted.replace(/o/g,'4');

    encrypted = encrypted.replace(/u/g,'5');

    encrypted = encrypted.replace(/ /g,'6');

    return encrypted;

};

/**

 * @return plaintext 

 */

SubstitutionCipher.prototype.decrypt = function(){

    var decrypted = this.text.replace(/1/g,'a');

    decrypted = decrypted.replace(/2/g,'e');

    decrypted = decrypted.replace(/3/g,'i');

    decrypted = decrypted.replace(/4/g,'o');

    decrypted = decrypted.replace(/5/g,'u');

    decrypted = decrypted.replace(/6/g,' ');

    return decrypted;

};

Polinomial Differentiation Using JS

/**

* This function will do polinomial differentioation.

* @author : irfanudin ridho

* @email : irfan.ub@gmail.com

* @date : December 28, 2010

* @version : 1.0

function Polinomial(){
    var x = new Array();
x[0] = 1;
var dx = 0.1;
var y = new Array();
    var fx = 2*x[0];
    y[0] = 1;
for(i=1;i<12;i++){
        x[i] = x[i-1]+dx;                   //1.1 - 1.2 - 1.3
        y[i]=y[i-1]+dx-fx;
   fx = 2*x[i];
    }
}

Linear Eq Using Numerical Method

/**
 * Function for solving linear equation using numerical method. 
 * 
 * @author  : irfanudin ridho
 * @email   : irfan.ub@gmail.com
 * @date    : December 28, 2010
 * @version : 1.0
 */




/**
 * @return x number value expected
 */ 
function getByNumericalMethod(){

    var x=100;

    for(i=0;i<110;i++){

        var y = x-10;

        if(y>0)

            x--;

        else if(y<0)

            x++;

}

   return x;

}

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