BAR GRAPH GENERATOR USING JAVASCRIPT

Demo👀

How Do You Make A Bar Graph Generator Using JavaScript!

1st Step:-

First you open your HTML Editor like - Notepad++,Subline Text,Brackets, etc.

Then start program use Html, Css, Javascript.

2nd Step:-

Copy the CSS code and then Paste your HTML Editor into <head> here </head> section.

CSS Code :-

  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
  <script src="https://kit.fontawesome.com/c570884f0c.js" crossorigin="anonymous"></script>
  <style>
  h1 { font-size:xx-large; }
  h2 { font-size:x-large; }
  .calc3 input[type=color] { height:38px; }
  .input-group>.form-control { width:40px; }
  .calc3 input[type=checkbox] { 
    -ms-transform: scale(2);
    -moz-transform: scale(2);
    -webkit-transform: scale(2);
    -o-transform: scale(2);
    transform: scale(2);
    padding: 10px;
    }
  .nav-link i { vertical-align:middle; }
  @media only screen and (max-width: 576px) {
    .calc3 { padding:10px; }
    .calc3 td { float:left; width:100%; }
    .calc3 td:nth-child(2) { clear:left; }
    .calc3 tr td:nth-child(3) { padding-top:10px; }
    .calc3 tr td:nth-child(3) select { margin-top:-8px; }
  }
  @media only screen and (min-width: 577px) {
    .calc3 { padding:15px; }
    .calc3 tr { line-height:40px; }
  }
  .calc2 tr td button { width:42px; height:34px; vertical-align:top }
    #chart_div { margin-top:10px; border:1px solid #ccc }
  @media (max-width:576px) {
    .calc2 { margin-left:-5px; width:100% !important; }
    .calc2 tr td:last-child { width:100%; }
    .calc2 input[type=text] { width:100%; width: calc(100% - 8px); font-size:initial; padding-left:5px; }
    .calc2 input[type=checkbox] { margin:10px 0px 0px 10px; }
    .calc2 tr:nth-child(n+9):nth-child(-n+15) td input[type=text]:first-child { width:64%; }
    .calc2 tr:nth-child(n+9):nth-child(-n+15) td input[type=text]:last-child { width:32%; }
      #chart_div { width: 100%; }
  }
  @media (min-width:577px) {
    .calc2 input[type=text] { width: 400px; font-size:initial; padding-left:5px; }
    .calc2 tr:nth-child(n+9):nth-child(-n+15) td input[type=text]:first-child { width:300px; }
    .calc2 tr:nth-child(n+9):nth-child(-n+15) td input[type=text]:last-child { width:94px; }
      #chart_div { width: 580px; height: 400px; }
  }
</style>

3rd Step:-

Copy the html code and then Paste your HTML Editor into <body> here </body> section.

HTML Code :-

 
<div id="lcol" class="d-flex justify-content-center">

    <div id="doc" style="background-color: #f9593d;" class="p-2">
      
      <h1 class="text-center text-light">
Bar Graph Maker</h1>
<form name="gen" onsubmit="return false;" >
      
      <br>
      <table class="calc3">
<tr>
          <td>Graph title:</td>
          <td><input type="text" class="form-control" name="title" placeholder="Graph Title"></td>
        </tr>
<tr>
          <td>Horizontal axis label:</td>
          <td><input type="text" class="form-control" name="hlabel" placeholder="hLabel"></td>
        </tr>
<tr>
          <td>Vertical axis label:</td>
          <td><input type="text" class="form-control" name="vlabel" placeholder="vLabel"></td>
        </tr>
<tr>
          <td>Horizontal data type:</td>
          <td>
           <select name="type" onchange="OnTypeChange()" class="form-control">
            <option>Data labels</option>
            <option>Data values</option>
            <option>Data range</option>
           </select>
          </td>
        </tr>
<tr id="xrow0">
          <td>Data labels:</td>
          <td><input type="text" class="form-control" name="xdesc" placeholder="name_1 name_2 name_3 name_4"></td>
        </tr>
<tr id="xrow1" style="display:none">
          <td>Data values:</td>
          <td><input type="text" class="form-control" name="xdata" placeholder="1 2 3 4"></td>
        </tr>
<tr id="xrow2" style="display:none">
          <td>Data range:</td>
          <td><input type="text" class="form-control" name="xrange" placeholder="1 4"></td>
        </tr>
<tr>
          <td>Number of bars:</td>
          <td>
           <select name="num" onchange="OnLineNumChange()" class="form-control">
            <option selected>1 bar</option>
            <option>2 bars</option>
            <option>3 bars</option>
            <option>4 bars</option>
            <option>5 bars</option>
            <option>6 bars</option>
           </select>
          </td>
        </tr>
<tr class="datarow[]">
          <td>Bar1 data values:</td>
          <td class="input-group">
            <input type="text" name="data[]" placeholder="300 500 100 200" class="form-control">
            <input type="text" name="desc[]" placeholder="Bar1" class="form-control">
            <input type="color" name="color[]" value="#3366CC" onchange="OnColorChange(this.value,1)">
          </td>
        </tr>
<tr class="datarow[]" style="display:none">
          <td>Bar2 data values:</td>
          <td class="input-group">
            <input type="text" name="data[]" placeholder="300 500 100 200" class="form-control">
            <input type="text" name="desc[]" placeholder="Bar2" class="form-control">
            <input type="color" name="color[]" value="#DC3912" onchange="OnColorChange(this.value,2)">
        </td>
        </tr>
<tr class="datarow[]" style="display:none">
          <td>Bar3 data values:</td>
          <td class="input-group">
            <input type="text" name="data[]" placeholder="300 500 100 200" class="form-control">
            <input type="text" name="desc[]" placeholder="Bar3" class="form-control">
            <input type="color" name="color[]" value="#FF9900" onchange="OnColorChange(this.value,3)">
          </td>
        </tr>
<tr class="datarow[]" style="display:none">
          <td>Bar4 data values:</td>
          <td class="input-group">
            <input type="text" name="data[]" placeholder="300 500 100 200" class="form-control">
            <input type="text" name="desc[]" placeholder="Bar4" class="form-control">
            <input type="color" name="color[]" value="#109618">
          </td>
        </tr>
<tr class="datarow[]" style="display:none">
          <td>Bar5 data values:</td>
          <td class="input-group">
            <input type="text" name="data[]" placeholder="300 500 100 200" class="form-control">
            <input type="text" name="desc[]" placeholder="Bar5" class="form-control">
            <input type="color" name="color[]" value="#990099">
          </td>
        </tr>
<tr class="datarow[]" style="display:none">
          <td>Bar6 data values:</td>
          <td class="input-group">
            <input type="text" name="data[]" placeholder="300 500 100 200" class="form-control">
            <input type="text" name="desc[]" placeholder="Bar6" class="form-control">
            <input type="color" name="color[]" value="#0099C6">
          </td>
        </tr>
<tr>
          <td>Horizontal bars:</td>
          <td><input type="checkbox" name="c" onclick="OnDraw()" ></td>
        </tr>
<tr>
          <td> </td>
          <td>
            <a role="button" title="Draw Graph" onclick="OnDraw()" class="btn btn-light"><i class="fas fa-chart-bar"></i></a>
            <a role="button" title="Zoom Out" onclick="OnZoomOut()" class="btn btn-light"><i class="fas fa-search-minus"></i></a>
            <a role="button" title="Zoom In" onclick="OnZoomIn()" class="btn btn-light"><i class="fas fa-search-plus"></i></a>
             <a href="" role="button" title="Save as PNG Image" id="download" download="bar-graph" target="_blank" class="btn btn-light"><i class="fas fa-save"></i></a>
              <a role="button" title="Copy Graph" onclick="OnCopy()" class="btn btn-light"><i class="fas fa-copy"></i></a>
             <a role="button" title="Print Graph" onclick="OnPrint()" class="btn btn-light"><i class="fas fa-print"></i></a>
             <a role="button" title="Reset" onclick="OnReset()" class="btn btn-light"><i class="fas fa-trash-alt"></i></a>
          </td>
        </tr>
<tr>
          <td colspan="2"><div id="chart_div">
</div>
<!--<a id="download" download="bar-graph" target="_blank">Download</a>--></td>
        </tr>
</table>
</form>
</div>
</div>

4th Step:-

Copy the JavaScript code and then Paste your HTML editor into the upper </body>.

Javascript Code:-

 
 <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
 <script src="https://www.gstatic.com/charts/loader.js"></script>
 <script>
      var txt,desc,data,c,st;
      var x=580;
      var y=400;
      
       $( document ).ready(function() {
            setGraphSize();          
            google.charts.load("visualization", "1", {packages:["corechart"]});
            google.charts.setOnLoadCallback(drawChart);
            //$("#pnglnk").click(function(e) { alert("Clicked"); e.preventDefault(); });
        });
    
    function setGraphSize()
    {
      var w = window,
          d = document,
          e = d.documentElement,
          g = d.getElementsByTagName('body')[0],
          xx = w.innerWidth || e.clientWidth || g.clientWidth;
          if( xx<577 )
            for(i=0; i<7; i++)
            {
              x*=0.9;
              y*=0.9;
            }
    }
      function OnDraw()
      {
        //GetData();
        
      drawChart();
      }
    function OnCopy()
    {
      alert("Press Save button and open image viewer to copy graph");
    }
    function OnPrint()
    {
      alert("Press Save button and open image viewer to print graph");
    }
      function OnReset()
      {
        x=580;
        y=400;
        setGraphSize();
      imgContainer = document.getElementById('img_div');
      while (imgContainer.firstChild) {
        imgContainer.removeChild(imgContainer.firstChild);
      }
        setTimeout(function(){OnDraw();}, 100);
        document.gen.reset();
      }
      function OnZoomOut()
      {
        x*=0.9;
        y*=0.9;
        OnDraw();
      }
      function OnZoomIn()
      {
        x/=0.9;
        y/=0.9;
        OnDraw();
      }
    function OnTypeChange()
    {
        //var xrow = document.gen['xrow[]'];
        var xrow0 = document.getElementById("xrow0");;
        var xrow1 = document.getElementById("xrow1");;
        var xrow2 = document.getElementById("xrow2");;
        var type = document.gen.type.selectedIndex;
        if( type==0 )
        {
          xrow0.style.display = '';
          xrow1.style.display = 'none';
          xrow2.style.display = 'none';
        }
        else if( type==1 )
        {
          xrow0.style.display = 'none';
          xrow1.style.display = '';
          xrow2.style.display = 'none';
        }
        else // type==2
        {
          xrow0.style.display = 'none';
          xrow1.style.display = 'none';
          xrow2.style.display = '';
        }
        
      drawChart();
    }
    function OnLineNumChange()
    {
      var row = document.getElementsByClassName('datarow[]');
        var i = document.gen.num.selectedIndex;
        var k;
        if( i>0 )
          for(k=1; k<i+1; k++)
            row[k].style.display = '';
        if( i<5 )
          for(k=i+1; k<6; k++)
            row[k].style.display = 'none';
      
      drawChart();
    }
    function OnColorChange(color, i)
    {
    }
    function drawChart() 
    {
        txt = document.gen.title.value;
        if( txt=='' ) txt="Graph Title";
        
        type = document.gen.type.selectedIndex;
        if( type==0 ) {
          s = document.gen.xdesc.value;
          if( s=='' ) s="name_1 name_2 name_3 name_4";
          desc = s.split(' ');
        }
        else if( type==1 ) {
          s = document.gen.xdata.value;
          if( s=='' ) s="1 2 3 4";
          desc = s.split(' ');
        }
        else { // type==2
          s = document.gen.xrange.value;
          if( s=='' ) s="1 4";
            s2 = s.split(' ');
            i1 = parseFloat(s2[0]);
            i2 = parseFloat(s2[1]);
          data = document.gen['data[]'];
          s = data[0].value;
          if( s=='' ) s="300 500 100 200";
          s = s.split(' ');
          num = s.length;
            di = (i2-i1)/(num-1);
            for(i=i1,k=0; k<num; i+=di,k++)
              desc[k] = i;
        }
        
        var num = document.gen.num.selectedIndex+1;
        var data = document.gen['data[]'];
        //s = data.value;
        //if( s=='' ) s="300 500 100 200 200";
        //d = s.split(' ');
        d = new Array(num);
        for(k=0; k<num; k++)
        {
          s = data[k].value;
          if( s=='' ) s="300 500 100 200";
          s = s.split(' ');
          d[k] = new Array(s.length);
          for(i=0; i<s.length; i++) {
          d[k][i] = s[i];           
          }
        }
        
        c = document.gen.c.checked;
    
      var arr=new Array();
        var ldesc = document.gen['desc[]'];
        arr[0] = new Array(num+1);
        arr[0][0] = 'Task';
        for(var k=0; k<num; k++)
        {
          ld = ldesc[k].value;
          if( ld=='' )
            arr[0][k+1] = 'Bar'+(k+1);
          else
            arr[0][k+1] = ld;
        }
      //arr[0][num+1] = { role: 'style' };
        
      for(var i=0; i<s.length; i++)
      {
          arr[i+1] = new Array(num+1);
        if( type==0 )
            arr[i+1][0] = desc[i];
        else
            arr[i+1][0] = parseFloat(desc[i]);
          for(k=0; k<num; k++) {
          arr[i+1][k+1] = parseFloat(d[k][i]);
        }
      }

      var data2 = google.visualization.arrayToDataTable(arr);
      
      hLabel = document.gen.hlabel.value;
      if( hLabel=='' ) hLabel='hLabel';
      vLabel = document.gen.vlabel.value;
      if( vLabel=='' ) vLabel='vLabel';
      //if( c==false )
      //  curve = 'none';
      //else
      //  curve = 'function';
      
        var color = document.gen['color[]'];
      var optcolors=[];
      for(var k=0; k<num; k++)
      {
        optcolors[k] = color[k].value;
      }
      var options = {
        title: txt,
        //curveType: curve,
        //hAxis: {logScale: false},
        //vAxis: {logScale: false},
        hAxis: {title: hLabel},
        vAxis: {title: vLabel},
        width: x,
        height: y,
        colors: optcolors
      };
      options.hAxis.gridlines = {color: '#CCC', count: 5};
      options.vAxis.gridlines = {color: '#CCC', count: 5};
      var chart;
      if( c==false )
        chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
      else
        chart = new google.visualization.BarChart(document.getElementById('chart_div'));

            google.visualization.events.addListener(chart, 'ready', function () {
                var data=chart.getImageURI();
                $("#download").prop("href", data);
                $("#download").click();
            });
      chart.draw(data2, options);
    }

    
function get_browser()
{
  s = GetBrowser();
  s = s.split(' ');
  return s[0];
}
function get_version()
{
  s = GetBrowser();
  s = s.split(' ');
  return s[1];
}
function GetBrowser()
{
    var ua= navigator.userAgent, tem, 
    M= ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
    if(/trident/i.test(M[1])){
        tem=  /\brv[ :]+(\d+)/g.exec(ua) || [];
        return 'MSIE '+(tem[1] || '');
    }
    if(M[1]=== 'Chrome'){
        tem= ua.match(/\bOPR\/(\d+)/)
        if(tem!= null) return 'Opera '+tem[1];
    }
    M= M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?'];
    if((tem= ua.match(/version\/(\d+)/i))!= null) M.splice(1, 1, tem[1]);
    return M.join(' ');
}
function GetOS()
{
  var OSName="unknown";
  if( navigator.appVersion.indexOf("Win")!=-1 )   OSName="Windows";
  if( navigator.appVersion.indexOf("X11")!=-1 )   OSName="UNIX";
  if( navigator.appVersion.indexOf("Linux")!=-1 ) OSName="Linux";
  if( navigator.appVersion.indexOf("Mac")!=-1 )   OSName="MacOS";
  if( navigator.userAgent.match(/Android/i) )   OSName="Android";
  if( navigator.userAgent.match(/iPhone|iPad|iPod/i) ) OSName="iOS";
  return OSName;
}
function GetFileName(file)
{
  i0 = file.lastIndexOf('/');
  i1 = file.lastIndexOf('\\');
  if( i0>i1 ) i1=i0;
  //if( i1==-1) i1=0;
  i1++;
  i2 = file.lastIndexOf('.');
    name = file.substring(i1,i2) || file;
    return name;
}
function GetFileExt(file)
{
  var ext = file.substring(file.lastIndexOf('.'));
  return ext;
}

function ShortBtn()
{
  var x,y,s;
  x = $(window).width()-400;
  y = 20;
  //$("#short_div").popup("option", "arrow", "l,t,r,b");
  $("#short_div").popup("open",{ arrow:true, x:x, y:y });
  var browser = get_browser();
  var os = GetOS();
  if( os=="iOS" )
  {
    s="Add to home screen:\n";
    s+="<ol>";
    s+="
<li>Click the Share button  <img src=\"/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings_065_share.png\">.</li>
";
    s+="
<li>Select <b>Add to Home Screen</b>.</li>
";
    s+="</ol>
";
  }
  else if( os=="Android" )
  {
    s="Add to home screen:\n";
    s+="<ol>";
    s+="
<li>Click the Settings button  <img src=\"/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings_011_3dot.png\">.</li>
";
    s+="
<li>Click the Star button  <img src=\"/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings_006_star-empty.png\">.</li>
";
    s+="
<li>Select <b>Add shortcut to home screen</b>.</li>
";
    s+="</ol>
";
  }
  else if( browser=='Chrome' )
  {
    s="Add to taskbar:\n";
    s+="<ol>";
    s+="
<li>Click the Chrome menu <img src=\"//ajax.googleapis.com/ajax/libs/jquerymobile/1.4.3/images/icons-png/bars-black.png\">.</li>
";
    s+="
<li>Click <b>More Tools</b>.</li>
";
    s+="
<li>Add the page:<ul>";
    s+="
<li>Windows: Click <b>Add to taskbar</b>.</li>
";
    s+="
<li>Linux: Click <b>Add to desktop</b>.</li>
";
    s+="</ul>
</li>
";
    s+="
<li>Check <b>Open as window</b>.</li>
";
    s+="</ol>
";
  }
  else if( browser=='Firefox' )
  {
    s="Add to desktop:\n";
    s+="Drag the address bar icon <img src=\"/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings_134_globe.png\"> to the desktop.";
  }
  $("#short_div").html(s);
}
    </script>

How To Download This Project

The first step you click on the ''Download Project'' button you will see a new popup, then click on again the ''Download'' button. Now your project will be downloaded.

1Add

BAR GRAPH GENERATOR USING JAVASCRIPT | BEGINNER

Demo👀

How Do You Make A Bar Graph Generator Using JavaScript!

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Project source code

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