爲什麼我的onchange函數不能正常工作？

Question

我是新來的紅寶石，並嘗試在這裏打電話給js函數onchange，但沒有工作，沒有得到合適的答案。

= 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

的select方法的參數是：

選擇（方法，選擇=零，選項= {}，html_options = {}，&塊）

您已經使用options針對html_options，因此您必須將您的代碼替換爲：

= 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')"