当我在Rails中使用link_to帮助器时，加载我的javascript时遇到了一些问题.当我使用‘localhost:3000/products/new’手动输入url或重新加载页面时，javascript会加载，但当我通过如下所述的链接时，jQuery $(document).ready将不会加载到新页面上.
Link_to, javascript does not load when I click this link:
<%= link_to "New Product", new_product_path %>
products.js file
$(document).ready(function() {
alert("test");
});
Any help would be much appreciated. Thanks in advance!
你在用Rails 4吗？(在您的控制台中执行rails -v以了解情况)
This issue is probably due to the newly added Turbolinks gem. It makes your application behave like a single page JavaScript application. It has a few benefits (it's faster), but it unfortunately breaks some existing events like $(document).ready() because the page is never reloaded. That would explain why the JavaScript works when you directly load the URL, but not when you navigate to it through a link_to.
这是关于Turbolinks的RailsCast分.
有几个解决方案.您可以使用jquery.turbolinks作为下拉修复，也可以将$(document).ready()语句切换为使用Turbolinks 'page:change'事件:
$(document).on('page:change', function() {
// your stuff here
});
Alternatively, you could do something like this for compatibility with regular page loads as well as Turbolinks:
var ready = function() {
// do stuff here.
};
$(document).ready(ready);
$(document).on('page:change', ready);
If you are using Ruby on Rails >5 (you can check by running rails -v in the console) use 'turbolinks:load' instead of 'page:change'
$(document).on('turbolinks:load', ready);