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POStoring data returned from ajax post- should I use async:false to store in var? Is there a better way?
 

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  1. POStoring data returned from ajax post- should I use async:false to store in var? Is there a better way?
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    <p>I have this code:</p> <pre><code> $.post('http://localhost/test_zone/index.php/blog/new_post', { image_codes: images, info: fieldData, post_body: body }, function(data){ if (data.success) { if(data.error != ''){ alert(data.error); } else { $('#preview_wrapper').css('display','none').html(data.postHTML).show(1000); $('#array_store').html(data.dataArray); } } else { alert('Sorry, an error occurred. No response from server.'); } } ,'json'); </code></pre> <p>As you can see, I'm grabbing two bits of data - postHTML &amp; dataArray- through an ajax post function. I want to put the dataArray in a var. I've read similar questions and I beleive the solution is to use 'async: false' - causing the function to wait for the data, and insert it in the var before proceeding. So I have several questions surrounding this:</p> <ol> <li><p>Firstly, how do you set 'async: false' using the shorthand jquery $.post as I am doing above, rather than $.ajax ({ type:'POST' }) ? is it possible? This would be useful to know, but I can't work it out or find an answer anywhere.</p></li> <li><p>I've heard a lot of negative comments about using 'async: false'. Would you recommend it? If not, how can I just store some data string on the page for later use? At the moment as you can see I've set the data to be inserted into a div (set to display:none) which strikes me as being less than ideal, to say the least.</p></li> <li><p>Why does the function not wait for the data to be inserted into a var, but when you set it to insert the data to an element on the page via .html(), it works? I guess this is like opening a door for the data string to just spill into the page in it's own time..? But why can't this methodology apply to inserting data into a var- why can't the door stay open to the var as well? (If you see what I mean!).</p></li> </ol> <p>Apologies for a rather lengthy question- any answers or partial answers to the points above will be very much appreciated. Thanks.</p> <p>EDIT: here is my full code (You can probably ignore all the data gathering bits, but I'll post the lot anyway)-</p> <pre><code> $('#submit').click(function(){ $('#input_table').hide(1000); if($('.image_info').length){ var images = []; $.each($('.image_info'), function(img_count) { var img_code = $(this).attr('class').split(' ').slice(-1); images.push('"' + img_count + '"' + ':' + '"' + img_code + '"'); img_count++; }); images = '{' + images + '}'; }else { var images = 'none'; } var editor = CKEDITOR.instances.editor1; var body = editor.getData(); body = clean(body); var fieldData = []; var cleanValue =''; $.each($('.field'), function() { cleanValue = clean($(this).val()); fieldData.push('"' + $(this).attr('id') + '"' + ':' + '"' + cleanValue + '"'); }); fieldData = '{' + fieldData + '}'; $.post('http://localhost/test_zone/index.php/blog/new_post', { image_codes: images, info: fieldData, post_body: body }, function(data){ if (data.success) { if(data.error != ''){ alert(data.error); } else { $('#preview_wrapper').css('display','none').html(data.postHTML).show(1000); $('#array_store').html(data.dataArray); } } else { alert('Sorry, an error occurred. No response from server.'); } } ,'json'); }); </code></pre>
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