JavaScript Примеры (If, Else)

Blue Red Green

<script>>
// Wait for DOM to load
document.addEventListener("DOMContentLoaded", function(event) {

  // Put the button into a variable
  var e = document.getElementById("myForm");
  var msg = "";
  
  // Wait for user to click the button
  e.addEventListener( "change", function() {
  
    // Put the selected value into a variable
    var myColor = this.color.value;
    
    // The "If Else" statement.
    if (myColor == "Blue") {
    
      msg = "Just like the sky!";
      
    } 
    
    else {

      msg = "Didn't pick blue huh?";
      
    }
    
    // Output message
    document.getElementById("msg").innerHTML = msg;
    
  }, false);
});
</script>


<form id="myForm" name="myForm" action="{action page}">
  <label>
    <input type="radio" name="color" value="Blue"> Blue
  </label>
  <label>
    <input type="radio" name="color" value="Red"> Red
  </label>
  <label>
    <input type="radio" name="color" value="Green"> Green
  </label>
</form>

<p id="msg"></p>