为什么我的onchange函数不起作用？

Question

我是ruby的新手，尝试在此处调用js函数onchange，但无法正常工作且未获得合适的答案。

= f.select :amendment_type, [['Renewal','renewal'],['Lease Amendment Agreement','Lease Amendment Agreement'],['Expansion','Expansion'],['Storage','Storage'],['Parking','Parking'],['Other(for me to fill in)','Other']], class: "amendment_type input", style: "width: 450px;", onchange: "alert('hello')"

Answer 1

The select method parameters are:

select(method, choices = nil, options = {}, html_options = {}, &block)

You've used options against html_options , so you have to replace your code with:

= f.select :amendment_type, [['Renewal','renewal'],['Lease Amendment Agreement','Lease Amendment Agreement'],['Expansion','Expansion'],['Storage','Storage'],['Parking','Parking'],['Other(for me to fill in)','Other']], {}, class: "amendment_type input", style: "width: 450px;", onchange: "alert('hello')"