如何在javascript中插入txt文件数据

Question

../chart.txt

[ 0, 1, 2, 3 ]

myJs.js

var chart = []
chart = //chart.txt file data

.

readFile( Path, Options, Callback)

how to insert txt file data in javascript.

Answer 1

I'm posting code in nodejs modules since you're accessing a local filesystem file

chart.txt

0,1,2,3,4

myJs.js

const fs = require('fs');

let chart = [];
chart = fs.readFileSync('file_path').toString().split(',');

If you don't want to change the format of your txt:

const fs = require('fs');

let chart = [];
chart = fs.readFileSync('file_path').toString().replace(/\[|\]| +/g, '').split(',');

Shorter:

const fs = require('fs');

let chart = null;
try {
    chart = JSON.parse(fs.readFileSync('file_path').toString());
} catch(_e) { chart = []; }