function containsAny(str, substrings) { for (var i = 0; i != substrings.length; i++) { var substring = substrings[i]; if (str.indexOf(substring) != - 1) { return substring; } } return null; } $("#sServer button").click(function(){ var embed = $(this).attr("data-embed"); console.log(embed); console.log(embed.substring(0,1)); if(embed.substring(0,1) == "<"){ $("#player #Playerholder").html(embed); }else{ $("#player #Playerholder iframe").attr("src",embed); } $(".active").attr("class",""); $(this).attr("class","active"); var iframe = document.getElementsByTagName("iframe")[0]; var qfrm = containsAny(testv, ["ok90", "vidhdr"]); if(qfrm){ iframe.sandbox = ''; }else{ iframe.sandbox = 'allow-forms allow-pointer-lock allow-same-origin allow-scripts allow-top-navigation'; } });