javascript - selectionStart Grabbing Earlier Parts of String JS -


it's issue, not huge issue. mean ask? making bbcode editor, , having minor issues on highlight text part right now.

basically when user highlights text, , clicks instance bold button, insert [b] , [/b] around text. working fine, there issue!

lets textarea:

hello name michael. name?

pay attention words 'name'! if highlight first 'name' word , bold it, works correctly. yet if highlight second 'name' , try bold it, instead bold first 'name' instead.

so if highlight word exists before it, , try style it, style same word beforehand. here full code:

function getinputselection(elem){     if(typeof elem != "undefined"){         start = elem[0].selectionstart;         end = elem[0].selectionend;         if (start != end) {             return elem.val().substring(start, end);         }     }     else{         return '';     } }  $('input:button[name^="texteditorstylebutton"]').click(function() {     var mytextareavalue = $('#my_textarea').val();     var selectedtext = getinputselection($('#my_textarea'));     var updatedtext = '['+$(this).val()+']' + selectedtext + '[/'+$(this).val()+']';     mytextareavalue = mytextareavalue.replace(selectedtext, updatedtext);     $('#my_textarea').val(mytextareavalue) });  $('input:button[name^="texteditorstylebutton"], #my_textarea').on('click keyup',function(){     var newer = $('#my_textarea').val().replace(/(\[((\/?)(b|u|i|s|sub|sup))\])/gi, '<$2>');     $('#display').html(newer); });

any ideas why doing this? think because of selectionstart. edit thank you, believed becuase of replace. ideas?


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