converting to key, values pair

Question

My question

How to read rom txt file in JS

Best approach to process the data. Something like this below or ????

var data = [
{
  name: "Orange",
  type: "Fruit",
  desc: "some description about the recipe"
},
  {
  name: "Spinach",
  type: "Veg",
  desc: "some description about the recipe"
},
  {
  name: "Beans",
  type: "Veg",
  desc: "some description about the recipe"
},

]

I want to have an object array so that I can process it further to print out unique names of fruits, just veggies and just fruits.

score 1 · Answer 1 · answered Apr 10 '17 at 18:29

You can accomplish this using AJAX and then a regular expression.

If you're using jQuery:

$.ajax({
    url: 'someTextFile.txt',
    success: function(data) {
        var regEx = /([a-zA-Z]+), ([a-zA-Z]+).*[\r\n  \t]*([a-zA-Z0-9 \.]+)/g,
            recipe, allRecipies = [];
        while (recipe = rege.exec(data)) {
            allRecipies.push({
                name: recipe[1],
                type: recipe[2],
                desc: recipe[3],
            });
        }
        console.log(allRecipies);
    }
});

If you're not using jQuery

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
       data = xhttp.responseText;
        var regEx = /([a-zA-Z]+), ([a-zA-Z]+).*[\r\n  \t]*([a-zA-Z0-9 \.]+)/g,
            recipe, allRecipies = [];
        while (recipe = rege.exec(data)) {
            allRecipies.push({
                name: recipe[1],
                type: recipe[2],
                desc: recipe[3],
            });
        }
        console.log(allRecipies);
    }
};
xhttp.open("GET", "filename", true);
xhttp.send();

score 0 · Answer 2 · answered Apr 10 '17 at 18:58

0

Don't bother creating your own parser to read in formats.

Save your content in a standard data-interchange format like json or xml

There are so many others and lookup standard libraries to parse them and get your information.

I'll recommend json, as Javascript as a JSON object for parsing JSON Files. And their are other good libraries for parsing JSON.

answered Apr 10 '17 at 18:58

Subomi

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Are you running on node, if yes .. node as a native JSON.parse .. try that. – Subomi Apr 10 '17 at 20:00
I am just trying to do in Vanilla JS – early_ninja Apr 10 '17 at 20:10
Yea, I understand, I mean are you running this script in your browser or on nodejs? – Subomi Apr 10 '17 at 20:15
In my browser as I dont have much experience using node.js – early_ninja Apr 10 '17 at 20:43
Okay, just simply pass in promotions to JSON.parse() function. Check this link http://stackoverflow.com/questions/4935632/parse-json-in-javascript – Subomi Apr 10 '17 at 20:52

converting to key, values pair

2 Answers2