When I write. Always problem and I can not seeresult of my coding

Question

Always when I write in result side written with red words that there something wrong. so howvto make them work

Answer 1

make practice on sample code and share here sample code and get solution

Answer 2

can you show us your code

Answer 3

Thank you very much, butbI solved problem. I wrote with <script>. Now I write without and it is ok.

Answer 4

suckit