cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

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  <label for="foo">foo </label>
  <input type="text" id="foo" required>*
  <input id="saveFoo" type="submit" value="save">
<div>valid? <span id="valid"></span></div>
<div>u entered: <span id="output"></span></div>
<div>feedback: <span id="feedback"></span></div>
              $("#saveFoo").click(function(e) {
  var valid = this.form.checkValidity(); // for demonstration purposes only, will always b "true" here, in this case, since HTML5 validation will block this "click" event if form invalid (i.e. if "required" field "foo" is empty)
  if (valid) {
    event.preventDefault(); // stops the "normal" <form> request, so we can post using ajax instead, below
    var feedback = $("#feedback");
    var foo = $("#foo").val();
      type: 'POST',
      url: 'http://httpbin.org/post', // a public, HTTP POST sandbox that returns the POST data
      data: {
        foo: foo
      dataType: 'json',
      success: function(data) {
        feedback.html("ajax post success! data.form.foo: " + data.form.foo);
      error: function(data) {
        feedback.html("ajax post failure");
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