Javascript /选择没有类的元素

Question

I've got a Calendar-table (created as a Javascript Object). Its top row involves both the days of previous and current month. I marked the days of the current month with Class "Out". Now I need to select the days of the previous month in order to make a Statement if {The top table row has the cells without Class "Out", I don't want to show them } How can I do that using native Javascript? In other words it seems like I need an analogue of .not() in JQuery.

Answer 1

:not(simple-selector) is actually a valid selector that you can pass to querySelector (and it is pretty well supported too .

if (!document.querySelector(".your-table tr:first-child td:not(.Out)") {
  // Then we need to hide that row
}