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Conditional Dropdown List Javascript And Html

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I'm trying to make a a webpage that has a conditional dropdown box using html and javascript. Say it's a certain day in the week like Monday I need a different dropdown box with di

Solution 1:

If i understood your requirement correctly. This is what you are looking for using jquery

$("#QuestionOptions").change(function(){
  $("#A,#B").hide();
  if($(this).val() == "A"){
    $("#A").show();
  }else{
     $("#B").show(); 
  }
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
 <head></head>
 <body>
    <div id="myQuestions">
        <select id="QuestionOptions">
            <option value disalbe selected>What Day is it?</option>
            <option value="A">Monday</option>
            <option value="A">Tuesday</option>
            <option value="B">Wednesday</option>
            <option value="B">Thursday</option>
            <option value="B">Friday</option>
            <option value="A">Saturday</option>
            <optoin value="A">Sunday</optoin>
        </select>
    </div>
    <div id="myAnswers">
        <div id="A" style="display: none;">
            <div id="QuestionC">
                <p>Exapmle of question.</p>
            </div>
            <div id="QuestionD">
                <select id="QuestionOptionsD">
                    <option value disalbe selected>Choose Your Answer</option>
                    <option value="G">Answer G</option>
                    <option value="H">Answer H</option>
                </select>
            </div>
        </div>
        <div id="B" style="display: none;">
            <div id="QuestionE">
                <p>Exmaple of another question.</p>
            </div>
            <div id="QuestionF">
                <select id="QuestionOptionsF">
                    <option value disalbe selected>Choose Your Answer</option>
                    <option value="I">Answer I</option>
                    <option value="J">Answer J</option>
                </select>
            </div>
        </div>
    </div>
</body>
</html>

Solution 2:

Check out my JSFidle. Most of code on javascript, remove some html element that doesn't needed.


Solution 3:

The following code makes the option selected when the value is matched with the option value.

<html>
 <head></head>
 <body>
<label>Quantity:</label><br><br>
<select name="qty" id="qty">
    <option value="50">50</option>
    <option value="100">100</option>
    <option value="150">150</option>
    <option value="200">200</option>
    <option value="250">250</option>
    <option value="300">300</option>
    <option value="350">350</option>
    <option value="400">400</option>
    <option value="450">450</option>
    <option value="500">500</option>
</select>

<script>
     $(document).ready(function(){
       $('#qty option[value={{ $qty }}]').attr('selected','selected');
   });
</script>
</body>
</html>

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