I'm trying to change css font with javascript,
I changed font-size like below and it worked
$(".bp-item.bp-title.buyuk-baslik-yazi").css("font-size",
+jsonVerisi.ayar[0].baslikFontSize + "px");
but when I try to change font-family by the same way,it doesn't work,is there anything that i'm missing ?
$(".bp-item.bp-title.buyuk-baslik-yazi").css("font-family",
+jsonVerisi.ayar[0].baslikFontFamily);

jsonVerisi.ayar[0].baslikFontFamily? I'd check that first.+is to convert a string to number.. if the string is not a valid number then it makes itNaN.