HarmonyOS 怎么判断字符串包含某个字符？

Question

例如 oad，aoa，dd是否包含oa

Answer 1

let str = 'oad,aoa,dd'
let target = 'oa'

if (str.includes(target)) {
  console.log('includes','true')
}else {
  console.log('includes','false')
}