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Ajax Return

Posted on 2016-08-16
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Last Modified: 2016-08-16
If I have an AJAX call that return info to different divs, how do I clear those Divs the next time the call is run and there is no ifo to place in the div?  Meaning each time the AJAX runs I want to reset the divs to empty.
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Question by:rgranlund
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6 Comments
 
LVL 9

Expert Comment

by:James Bilous
ID: 41758161
In the same call in which you do the ajax call, do:

$("#divId").empty();

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LVL 9

Expert Comment

by:Brian Tao
ID: 41758176
Just put the following line of code before your ajax call:
document.getElementById('id_of_your_div').innerHTML="";

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or if you're using jQuery:
$('#id_of_your_div').html('');

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LVL 9

Accepted Solution

by:
Mukesh Yadav earned 1000 total points
ID: 41758181
As you said you have multiple div then you can assign same class to all of them and before or after AJAX call(as per your logic) you can empty them have a look on the following code

<div class="emptyIt">div 1 content</div>
<div class="emptyIt">div 2 content</div>
<div class="emptyIt">div 3 content</div>
$('.emptyIt').empty();

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LVL 111

Expert Comment

by:Ray Paseur
ID: 41758204
This is not a PHP question; it's a JavaScript question that can be answered with jQuery.

jQuery Documentation Link for empty() method:
https://api.jquery.com/empty/

You might also consider detach() method:
https://api.jquery.com/detach/

Or just set the contents to null with something like this:
$("#dynamic").val("");
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LVL 59

Assisted Solution

by:Julian Hansen
Julian Hansen earned 1000 total points
ID: 41758216
$("#dynamic").val("");
Div's don't have a value - the above line will not work.

Correct answer was the first - empty()

Sample
HTML
  <div class="row">
    <div class="col-lg-6">
      <div id="one">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas facilisis turpis vitae odio mattis, at bibendum purus blandit. Pellentesque metus nisl, rutrum a lectus sed, suscipit fermentum tellus. Quisque vitae massa gravida, rutrum diam in, lacinia neque. Nunc mauris dui, efficitur eget magna in, egestas dictum tortor. Aenean finibus magna nulla, et gravida justo rhoncus sed. In porttitor lorem tortor, vitae dapibus ipsum faucibus ac. Maecenas sit amet orci dui. </div>
      <a href="#one" class="clear-empty">Clear with empty</a>
    </div>
    <div class="col-lg-6">
      <div id="two">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas facilisis turpis vitae odio mattis, at bibendum purus blandit. Pellentesque metus nisl, rutrum a lectus sed, suscipit fermentum tellus. Quisque vitae massa gravida, rutrum diam in, lacinia neque. Nunc mauris dui, efficitur eget magna in, egestas dictum tortor. Aenean finibus magna nulla, et gravida justo rhoncus sed. In porttitor lorem tortor, vitae dapibus ipsum faucibus ac. Maecenas sit amet orci dui. </div>
      <a href="#two" class="clear-html">Clear with html</a>
    </div>
  </div>

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JQuery
<script src="http://code.jquery.com/jquery.js"></script>
<script>
$(function() {
  $('.clear-empty').click(function(e) {
    e.preventDefault();
    $($(this).attr('href')).empty();
  });
  $('.clear-html').click(function(e) {
    e.preventDefault();
    $($(this).attr('href')).html('');
  });
});
</script>

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Working sample here
1
 
LVL 111

Expert Comment

by:Ray Paseur
ID: 41758221
@Julian: You're right, my mistake.  Divs probably have a .html() method, whereas input controls have a .val() method.

http://api.jquery.com/val/
http://api.jquery.com/html/
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