question how refresh works

[kangaroolab]

if I have a code like below where I have static content and dynamic content, doe vanjs refresh them every time together or only refresh the dynamic party?

return div(
  div("static content"),
  div(variable.val)
)

if I like to not refresh static content, do I have to separate it out?

[sirenkovladd]

Your code refresh together

you can change it to

return div(
  div("static content"),
  div(variable)
// or
  () => div(variable.val)
// or
  div(() => variable.val)
)

and the static part will not be refresh

[kangaroolab]

thanks...

is div(variable.val) same as div(variable)?

[sirenkovladd]

not exactly

div(variable.val) this more similar to div("static content")

div(variable) to div(() => variable.val)

when you pass a van.state as an argument, van automatically makes a binding, preventing the parent element from being re-rendered