2022-11-04 NOV

chat services,

...

createFileReader = (fun=console.log,target=document.body)=>{

let ip = document.createElement('input')

target.appendChild(ip)

ip.type='file'

readFile=(evt)=>{

let file = evt.target.files[0]

console.log('file:',file)

let reader = new FileReader();

reader.readAsText(file);

reader.onload = function() {

let txt=reader.result // the text content of the file

// you can now process the txt with your own fun

fun(txt)

};

}

ip.onchange=readFile

}

myFun=(txt)=>{ // example of a function to parse a txt table into an array, dt

dt=txt.split(/[\n\r]+/)

.map(x=>x.split(/\t/))

}