Question

In: Computer Science

JavaScript Use the browser tools to identify the lines missing var keywords, add the keywords in...

JavaScript

Use the browser tools to identify the lines missing var keywords, add the keywords in your text editor.

<html>

        <body>

                <header>

                   <h1>

                      Hands-on Project 4-3

                   </h1>

                </header>

             

                <article>

                   <div id="results">

                       <p id="resultsExpl"></p>

                       <ul>

                          <li id="item1"></li>

                          <li id="item2"></li>

                          <li id="item3"></li>

                          <li id="item4"></li>

                          <li id="item5"></li>

                       </ul>

                   </div>

                   <form>

                       <fieldset>

                         <label for="placeBox" id="placeLabel">

                           Type the name of a place, then click Submit:

                         </label>

                         <input type="text" id="placeBox" />

                       </fieldset>

                       <fieldset>

                         <button type="button" id="button">Submit</button>

                       </fieldset>

                   </form>

                </article>

                <script>

                   var places = []; // new array to store entered places

                   var i = 1; // counter variable to track array indexes

             

                   // function to add input to array and then generate list after 5th submission

                   function processInput() {

                     "use strict";

                      places[i] = document.getElementById("placeBox").value; // add entered value to array

                      document.getElementById("placeBox").value = "" // clear text box

                      if (i < 5) { // iterate counter variable

                         i++;

                      }

                      else { // add entered value to array and write results to document

                         document.getElementById("resultsExpl").innerHTML = "You entered the following places:";

                         listItem = "";

                         for (j = 1; j < 6; j++) { // write each array element to its corresponding list item

                            listItem = "item" + j;

                            document.getElementById(listItem).innerHTML = places[j];

                         }

                    

                   }

             

                   // add backward compatible event listener to Submit button

                 

                }

                /* this listener should be out of  processInput() function*/

                var submitButton = document.getElementById("button");

                   if (submitButton.addEventListener) {

                     submitButton.addEventListener("click", processInput, false);

                   } else if (submitButton.attachEvent) {

                     submitButton.attachEvent("onclick", processInput);

                   }

                </script>

             </body>

</html>

Solutions

Expert Solution

Here, you have two variables without any declaration.

they are:

  1. listItem
  2. j

Replace them like..

NOW Your code is good.!!!

var places = []; // new array to store entered places

                   var i = 1; // counter variable to track array indexes

             

                   // function to add input to array and then generate list after 5th submission

                   function processInput() {

                     "use strict";

                      places[i] = document.getElementById("placeBox").value; // add entered value to array

                      document.getElementById("placeBox").value = "" // clear text box

                      if (i < 5) { // iterate counter variable

                         i++;

                      }

                      else { // add entered value to array and write results to document

                         document.getElementById("resultsExpl").innerHTML = "You entered the following places:";

var listItem = "";

                         for (var j = 1; j < 6; j++) { // write each array element to its corresponding list item

                            listItem = "item" + j;

                            document.getElementById(listItem).innerHTML = places[j];

                         }

                    

                   }

             

                   // add backward compatible event listener to Submit button

                 

                }

                /* this listener should be out of  processInput() function*/

                var submitButton = document.getElementById("button");

                   if (submitButton.addEventListener) {

                     submitButton.addEventListener("click", processInput, false);

                   } else if (submitButton.attachEvent) {

                     submitButton.attachEvent("onclick", processInput);

                   }

======================

venereology answered 2 hours ago
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