pattern-matching.js

const actions = ()=>{
  const functionA = ()=>{/*do sth*/}
  const functionB = ()=>{/*do sth*/}
  const functionC = ()=>{/*send log*/}
  
  return new Map([
    [/^guest_[1-4]$/,functionA],
    [/^guest_5$/,functionB],
    [/^guest_.*$/,functionC],
    //...
  ])
}

const onButtonClick = (identity, status)=>{
  patternOnEach(actions(), `${identity}_${status}`); 
}

const patternOnEach = (allActions, pattern) => {
  const actions = [...allActions].filter(([key, value]) => (key.test(pattern)));
  actions.forEach(([key,value]) => value.call(this))
}

const patternOnFirst = (allActions, pattern) => {
  const action = [...allActions].find(([key, value])=>(key.test(pattern)));
  if (!action) { return; }
  action[1].call(this);
}