jQuery addClass example

Change class name on click in jQuery

by Scoobler

HTML

<div id="banner-message">
  <button>Calculate</button><br />
  Max Loadstep: <input type="text" id="i_Max_Loadstep" value="200" />200<br />
  No LB's Online: <input type="text" id="i_LB_Online" value="1" />1<br />
  MAN Mode (0=OFF / 1=ON): <input type="text" id="i_Man_Mode" value="0" />0<br />
  Deviation: <input type="text" id="i_Loadstep_Required" value="600" />600<br />
  Limit Loadstep (0=OFF / 1=ON): <input type="text" id="i_Limit_Step_Enabled" value="1" />1<br />
  LB10 Online (0=OFF / 1=ON): <input type="text" id="i_LB10_Enabled" value="1" />1<br />
  Current Load: <input type="text" id="i_Load" value="1200" />1200<br />
  LB10 Current Load: <input type="text" id="i_LB10_Setpoint" value="900" />900<br />  
</div>
.....
<div id="banner-message">
  New Load: <span id="o_Load"></span><br />
  Loadstep: <span id="o_Loadstep"></span><br /><br />
  Process: <br /><span id="o_Process"></span>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
  margin: 0 auto;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
}

#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

JavaScript

// find elements
var button = $("button")

// handle click and add class
button.on("click", function(){
  var x_Loadstep_LBs = 0, x_Load = 0, x_LB10_Loadstep = 0, x_LBs_Loadstep = 0, x_LBs_Load = 0;
  var i_Max_Loadstep = parseInt($('#i_Max_Loadstep').val());
  var i_LB_Online = parseInt($('#i_LB_Online').val());
  var i_Man_Mode = parseInt($('#i_Man_Mode').val());
  var i_Loadstep_Required = parseInt($('#i_Loadstep_Required').val());
  var i_Limit_Step_Enabled = parseInt($('#i_Limit_Step_Enabled').val());
  var i_LB10_Enabled = parseInt($('#i_LB10_Enabled').val());
  var i_Load = parseInt($('#i_Load').val());
  var i_LB10_Setpoint = parseInt($('#i_LB10_Setpoint').val());
  $('#o_Process').html('');

  x_Loadstep_LBs = i_Max_Loadstep * i_LB_Online;
  addMsg('Max LB\'s Loadstep calculated at: ' +  x_Loadstep_LBs);
  
  if (i_Man_Mode === 1) {
  	addMsg('Running in MAN mode, don\'t apply limits.')
    x_Load = i_Loadstep_Required;
  } else {
    if (i_Limit_Step_Enabled === 0) {
    	addMsg('Limit loadstep is disabled.');
      x_Load = i_Loadstep_Required;
    } else {
      if (i_Loadstep_Required < i_Max_Loadstep) {
      	addMsg('Loadstep is less than the maximum loadstep.');
        x_Load = i_Loadstep_Required;
      } else {
        if (i_LB10_Enabled === 0) {
        	addMsg('LB10 is not online.')
          if (i_Loadstep_Required  < x_Loadstep_LBs) {
          	addMsg('Loadstep required is less than the max loadstep on the LB\'s.')
            x_Load = i_Loadstep_Required;
          } else {
          	addMsg('Loadstep required exceeded max loadstep on the LB\'s so only applied max step.')
            x_Load = x_Loadstep_LBs;
          }
        } else {
          x_LB10_Loadstep = i_Loadstep_Required - (i_Load - i_LB10_Setpoint);
          addMsg('Calculated LB10\'s loadstep to be: ' + x_LB10_Loadstep);

          if (x_LB10_Loadstep < 0) {
          	addMsg('As the amount to be removed from LB10 is negative, that means no load needs to be removed from...