CODEWITHSUNDEEP
javascriptphpjqueryselectonchange
Jacek Placek
Jacek Placek

Reputation: 80

Javascript onchange function does not work with PHP

I wrote some code, which generates a form using PHP. I want to use javascript (line 57) to make more changes - by choosing something from dropdown menu (127 line):

If I select value "range", I want to generate two more inputs in the form, just next to the row.

This is how I want it to look like

// Javascript
$(function() {
    $("#select1").on("change",function() {
        var value = this.value;
        document.getElementById('a').innerHTML = value;
    });
});   

// HTML
<select onchange="select(this.value)" id="select1" name="type$i" size="1">
    <option value="max">Maximum the best</option>
    <option value="min">Minimum the best</option>
    <option value="range">Range</option>
</select>

Upvotes: 0

Views: 536

Answers (2)

Albeis
Albeis

Reputation: 1580

This could be an approach if I have understood well. Hope it helps!

$(function() {
          $("#select1").on("change",function() {
            var value = $(this).val();
            if (value == "range") {
              $("#select2, #select3").show();
            } else {
              $("#select2 , #select3").hide();   
            }
            
          });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id="select1" name="type1" size="1">
    <option value="max">Maximum the best</option>
    <option value="min">Minimum the best</option>
    <option value="range">Range</option>
</select>

<select id="select2" name="type2" size="1" style="display:none;">
    <option value="max">Maximum the best</option>
    <option value="min">Minimum the best</option>
    <option value="range">Range</option>
</select>
<select id="select3" name="type3" size="1" style="display:none;">
    <option value="max">Maximum the best</option>
    <option value="min">Minimum the best</option>
    <option value="range">Range</option>
</select>

Upvotes: 2

dom_ahdigital
dom_ahdigital

Reputation: 1679

A simple example like this may help you. Without the full HTML we cannot offer better examples.

function select(value) {
  if (value == "range") {
    $('<input>').attr({
      type: 'text',
      id: 'foo1',
      name: 'bar1'
    }).appendTo('form');
    $('<input>').attr({
      type: 'text',
      id: 'foo2',
      name: 'bar2'
    }).appendTo('form');
  }
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
  <select onchange="select(this.value)" id="select1" name="type$i" size="1">
    <option value="max">Maximum the best</option>
    <option value="min">Minimum the best</option>
    <option value="range">Range</option>
</select>
</form>

Upvotes: 0

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