Elastic Search Demo

elasticdemo.js

const data = [
  'the bright blue butterfly hangs on the breeze',
  'its best to forget the great sky and to retire from every wind',
  'under blue sky in bright sunlight, one not need search around',
  'Love is blind.	',
  `I don't want to go to school.`,
  `Let's get it over with.`,
  `The red one.	`,
  `I have a big dog.	`,
  `Where's the nearest bus stop?	`,
  `Sorry. I would like to, but I don't know how to drive.	`,
  `She avoided him whenever possible.	`,
  `There is an urgent need for more people to donate their time and money.	`,
  `I have ten pens.	`,
  `He came back last August.`,
  `For some reason, I'm wide awake and can't fall asleep.	`,
  `I left home at seven.`,
  `I didn't get the joke.`,
  `Where are you?`,
  `Don't let him know her address.`,
  `I want to stay in America for a few years.`,
  `Fill it up, please.`,
  `All the boys in class worked hard.`,
  `How do you usually decide what to eat?`,
  `OK.`,
  `I am willing to help you.`,
  `What do you do on Sunday?`,
  `He looks like his father.`,
  `It was only yesterday that I realized what she really meant.`,
  `My father loves my mother.`,
]

const docs = []

data.forEach((x, i) => {
  x.split(' ').forEach(z => {
  		const currentDoc = docs.find(doc => doc.term === z)
  		if(currentDoc){
      	currentDoc.id.push(i)
      }else{
        docs.push({
          term: z.toLowerCase(),
          id: [i]
        })
      }
      
  })
})

function search(keyword){
	const results = []
	keyword.split(' ').forEach(term => {
  	const curr = docs.find(doc => doc.term === term)
    if(curr){
    	results.push(curr.id.map(v => {
      	return data[v]
      }))
    }
  })
  return {
  	count: results.flat(1).length,
  	records: results.flat(1)
  }
}

console.log(search('blue sky you'))