javascript - Fault with appending item to drop down (local storage) -

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i have following code, works well.

<div style="padding:2px;">   <form action='test.php' name ='gen' method='post'>     <input type='text' name='pass' placeholder="insert website" size="10">&nbsp;<input type='submit' value='open'>   </form> </div> <?php   $random = 'specificsaltcode'; // specific salt   $pass2  = $_post['pass'] . $random; // add user input   $pass   = md5($pass2); // md5() both   $url    = 'http://www.website'.$_post['pass'].'random'.$pass.'randomurlcontinued'; // url need    echo '<iframe id="iframe1" name="iframe1" scrolling="yes" src="' . $url . '" style="position: absolute; left: 0px; top: 26px;" width="99%" height="88%" border="0"></iframe>'; ?>

this hashes user input string , sends original input string, along hashed number iframe url. works me.

however, rather send url iframe, need send drop down list , store using local storage.

i have following code drop down.

<style>   #choice option { color: black; }   .empty { color: gray; } </style> <script>   var vm  = function () {     this.annotationlist = ko.observable();     this.area = ko.observablearray();     this.append = function () {       this.area.push(this.annotationlist());       localstorage.setitem('labelobject',this.annotationlist());       localstorage.setitem('labelobjectlist',this.area());     };   };    var existannotationmodel = new vm();    ko.applybindings(existannotationmodel); </script> <script>   $("#choice").change(function () {     if($(this).val() == "0") $(this).addclass("empty");     else $(this).removeclass("empty")   });   $("#choice").change(); </script>  <form >   <span class="btn-group">     <select name="select" data-bind="options: area" id="choice">       <option value="0" selected="selected">choose     website</option>     </select>     <input id="editexistannotation" data-bind="value:     annotationlist"  type="text" placeholder="enter website"/>   </span>   <button id="buttonsave" type="submit"     data-bind="click:append" >save</button> </form> <div id="labellist" class="btn-group" ></div>

however, drop down method not store these appends. infact, doesn't add items menu @ all. i'd add item drop down, , save using local storage, when user refreshes page, appends still there.

so 2 issues, how pass url drop down, , how make drop down save appended items.

also, not concerned on security issues @ moment.


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