Disable select box based on check box click

<form>
  <input type="checkbox" id="pizza" name="pizza" value="yes">
  <label for="pizza">I would like to order a</label>
  <select id="pizza_kind" name="pizza_kind">
    <option>(choose one)</option>
    <option value="margaritha">Margaritha</option>
    <option value="hawai">Hawai</option>
  </select>
  pizza.
</form>

 src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js">

  var update_pizza = function () {
    if ($("#pizza").is(":checked")) {
        $('#pizza_kind').prop('disabled', false);
    }
    else {
        $('#pizza_kind').prop('disabled', 'disabled');
    }
  };
  $(update_pizza);
  $("#pizza").change(update_pizza);

Android json string object to javascript variable

http://stackoverflow.com/questions/9036429/convert-object-string-to-json

 

97down voteaccepted

If the string is from a trusted source, you could use eval then JSON.stringify the result. Like this: var str = "{ hello: 'world', places: ['Africa', 'America', 'Asia', 'Australia'] }"; var json = JSON.stringify(eval("(" + str + ")")); Note that when you eval an object literal, it has to be wrapped in parentheses, otherwise the braces are parsed as a block instead of an object. I also agree with the comments under the question that it would be much better to just encode the object in valid JSON to begin with and avoid having to parse, encode, then presumably parse it again. HTML supports single-quoted attributes (just be sure to HTML-encode any single quotes inside strings).