I want to remove Un-expected token 'if' error

I'm getting error of un-expected token 'if'. How it should be removed?

function getCampiagnData(){ var campaignId = $("#campaign_id").val(); $.ajax({ url: "ajax.php", data:{ campaign:campaignId}, success: function(result){ var campaingData = JSON.parse(result); var data = campaingData.data; $("#metaCampaign").empty(); var appendData = ""; for(var i = 0 ; i '+displayNames[j]+''; } appendData +=''+ ''+ ''+ ''+ ''+ ''+ optionAppendData+ ''+ ''+ ''+ ''+ ''+ 'Show'+ 'Hide'+ ''+ ''+ ''+ ''; } $("#metaCampaign").append(appendData); }}); }