如何在clojure Hiccup中嵌入javascript？

I'm writing a webserver app in clojure with Hiccup (and other things). I'm trying to have a check-box enable and disable two drop-down fields with a little JS but I can't make it work.

我正在用Hiccup（以及其他东西）在clojure中编写一个webserver应用程序。我正在尝试启用一个复选框，并使用一个小的JS禁用两个下拉字段，但我无法使其工作。

[:head
[:script "function toggleText(cb, t1, t2) {
    document.getElementById(t1).disabled = !cb.checked;
    document.getElementById(t2).disabled = !cb.checked;
}"]]

[:td (hf/check-box {:on-change (str "toggleText(" (name endtag) "," (name tytag) "," (name tmtag) ")")} endtag)]
[:td (hf/drop-down tytag (range 2013 2031) 2017)]
[:td (hf/drop-down tmtag (range 1 13) 6)]

2 个解决方案

#1

on-change is a React handler and won't work in server-side HTML.

on-change是一个React处理程序，在服务器端HTML中不起作用。

If you don't want to create a separate JS file, you can use the onclick attribute: the below should work (provided that the hf/check-box function creates an element with the given properties):

如果您不想创建单独的JS文件，可以使用onclick属性：下面应该可以工作（假设hf / check-box函数创建一个具有给定属性的元素）：

[:td (hf/check-box
      {:onclick (str "toggleText(" (name endtag) ","
                     (name tytag) "," (name tmtag) ")")}
      endtag)]

#2

Thanks Aleph, your fix together with adding getElementById for the cb parameter in the function did the trick!

感谢Aleph，你的修复以及为函数中的cb参数添加getElementById就可以了！

The function now looks like this

该功能现在看起来像这样

[:script "function toggleText(cb, t1, t2) {
    document.getElementById(t1).disabled = !document.getElementById(cb).checked;
    document.getElementById(t2).disabled = !document.getElementById(cb).checked;}"]

And I simplified the Hiccup code too (not passing the tags as parameters) so it looks like this

我也简化了Hiccup代码（不将标签作为参数传递），所以它看起来像这样

[:td (hf/check-box {:onclick (str "toggleText('endtag','toyear','tomonth')")} :endtag (some? (:toyear m)))]
[:td (hf/drop-down :toyear (range 2013 2031))]
[:td (hf/drop-down :tomonth (range 1 13))]

#1