jQuery Validate with simple Button

a simple validation when input type button is click using jquery validation plugins

by survivant

HTML

<div>xbar = <input id="xbar" name="xbar" type="text" value="4"></div>
    <div>mu = <input id="mu" name="mu" type="text" value="3"></div>
    <div>sigma = <input id="sigma" name="sigma" type="text" value="12"></div>
    <div>n = <input id="n" name="n" type="text" value="4"></div>
    <div><input type="button" id="calculate" name="calculate" value="Calcul"></div>
    formule :  `z= (bar(x)-mu)/(sigma / sqrt(n))`
	<div>`z=(4-3)/(12/sqrt(4)) = 1/6`</div>
  <br/>
  <div>formule calculee: <span id="formule"></span></div>
  <div>total: <span id="total"></span></div>

JavaScript

$(function() {
    //simple example 1
    //click event for first button 
    $('#calculate').click(function() {
        var xbar = parseInt($("#xbar").val()); 
				var mu = parseInt($("#mu").val());
        var sigma = parseInt($("#sigma").val());
        var n = parseInt($("#n").val());
        
        var z = (xbar-mu)/(sigma/Math.sqrt(n));
        
        var z_text="`z= (xbar-mu)/(sigma / sqrtn)`";
        z_text = z_text.replace("xbar", xbar);
        z_text = z_text.replace("mu", mu);
        z_text = z_text.replace("sigma", sigma);
        z_text = z_text.replace("sqrtn", n);
        
				$("#formule").text(z_text);
        $("#total").text(z);
    });
    
   
});