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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <form id="example_form">
  <div class="form-group">
    <label for="mobile">Mobile number</label>
    <input type="tel" class="form-control" id="mobile" placeholder="Mobile number" aria-required="true" aria-invalid="false" required>
  </div>
  <button type="submit" class="btn btn-default" id="validate">Validate</button>
</form>
<hr>
<small>Test API key always returns Valid</small>
            
          
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              body {
  padding: 5%;
}
#mobile {
  margin-bottom: 20px;
}

            
          
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              // Replace with your API key, test key will always return true regardless of mobile number
var api_key = "PCW45-12345-12345-1234X";

var example_form = document.getElementById("example_form");

example_form.addEventListener("submit", function(e) {
  e.preventDefault();
  var mobile_field = document.getElementById("mobile");
  validate_mobile(mobile_field);
});

function validate_mobile(element) {
  // Grab the input text and trim any whitespace
  var mobile_number = element.value.trim();

  if (mobile_number != "") {
    // Remove any previous validation results
    var mobile_valid = document.getElementById("mobile_valid");
    if (mobile_valid) {
      mobile_valid.remove();
    }

    // Create a template bootstrap alert div
    var response_html = document.createElement("div");
    response_html.setAttribute("class", "alert");
    response_html.setAttribute("role", "alert");
    response_html.setAttribute("id", "mobile_valid");

    // Create the URL including API key and encoded mobile number
    var mobile_url =
      "https://ws.postcoder.com/pcw/" +
      api_key +
      "/mobile/" +
      encodeURIComponent(mobile_number);

    // Create a loading message
    var loading_html = document.createElement("div");
    loading_html.setAttribute("id", "mobile_loading");
    loading_html.textContent = "Validating mobile number...";

    element.insertAdjacentElement("afterend", loading_html);
    // Call the API
    var mobile_request = new XMLHttpRequest();
    mobile_request.open("GET", mobile_url, true);

    mobile_request.onload = function() {
      if (mobile_request.status >= 200 && mobile_request.status < 400) {
        loading_html.remove();
        var data = JSON.parse(mobile_request.responseText);

        if (data.valid === true) {
          // Add relevant class and message to alert template
          response_html.classList.add("alert-success");
          response_html.textContent = "Mobile number valid";
          // Add alert to page after mobile field element
          element.insertAdjacentElement("afterend", response_html);

          // Set ARIA-invalid attribute of field to false (means it is NOT invalid)
          element.setAttribute("aria-invalid", "false");
          // Additional info such as Network is also returned, full details - https://developers.alliescomputing.com/postcoder-web-api/mobile-validation
        } else {
          // Add relevant class and message to alert template
          response_html.classList.add("alert-danger");
          response_html.textContent = "Mobile number not valid: " + data.state;
          // Add alert to page after mobile field element
          element.insertAdjacentElement("afterend", response_html);

          // Set ARIA-invalid attribute of field to true (means it IS invalid)
          element.setAttribute("aria-invalid", "true");
          // Full list of "state" responses - https://developers.alliescomputing.com/postcoder-web-api/mobile-validation
        }
      } else {
        loading_html.remove();

        // Triggered if API does not return HTTP code between 200 and 399
        // More info - https://developers.alliescomputing.com/postcoder-web-api/error-handling
      }
    };

    mobile_request.onerror = function() {
      loading_html.remove();
      // Triggered if API cannot be reached
      // More info - https://developers.alliescomputing.com/postcoder-web-api/error-handling
    };
    mobile_request.send();
  }
}

            
          
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