React.js - 显示/隐藏组件中动态生成的元素

I'm generating form field elements using a component template importing an array of data. I want to be able to hide some of these elements and show them when some other's element's criteria has been met; this is fairly common in form fields, e.g. When you select item A, form field X appears, when you select item B, form field X is hidden.I'm generating form field elements using a comp