extract texts from webpage and save as a json file

index.js

function save(data,filename){
  
    if(!data) {
        console.error('Console.save: No data')
        return;
    }

    if(!filename) filename = 'console.json'

    if(typeof data === "object"){
        data = JSON.stringify(data, undefined, 4)
    }

    var blob = new Blob([data], {type: 'text/json'}),
        e    = document.createEvent('MouseEvents'),
        a    = document.createElement('a')

    a.download = filename
    a.href = window.URL.createObjectURL(blob)
    a.dataset.downloadurl =  ['text/json', a.download, a.href].join(':')
    e.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
    a.dispatchEvent(e)
 
}

function saveJSON(filename){
let texts = document.getElementsByTagName('body')[0].innerText.split('\n')
let json = []
 
 for(let i =0;i<texts.length;i++){
    let text = texts[i]
    if(text == '') continue
    json.push({key:text})
}
  save(json,filename)
}