Subtract the initial character from the result

Question

Subtract the initial character from the result

What is the best way to eliminate the first letter from a string in this scenario?

d[],e[], [dsh,sj]

After analyzing the data, I realized that I need to remove the first letter before every comma (,). I tried storing the data and using a for loop, but encountered an error.

*Uncaught SyntaxError: Unexpected token [*

I'm having trouble understanding why this error is occurring. Can anyone explain?

EDIT : I understand how to remove elements, but I'm struggling with declaring it in this context.

Expected Output :  [],[],[dsh,sj]

javascript arrays

Answer 1

Answer №1

To ensure we are on the same page:

let s = "hello"; // this is a String, note the use of quotes
let a = [] // an empty Array
let b = ["hello", "bye"] // an Array with two elements

If the provided input is:

let input = "d[],e[], [dsh,sj]";
let output = input.replace(/.\[/g,"["); // resulting in '[],[],[dsh,sj]' but as a String data type

// this code block might be improved...
let splitted = output.replace(/],/g, "],,");
splitted = splitted.split(",,");
let array = [];

splitted.forEach(function(value) {
  value = value.replace(/\[|\]/g,"");

  if (value === "") {
    value = [];
  } else {
    value = value.split(",");
  }

  array.push(value);
});

console.log(array); // [[],[],["dsh","sj"]]

I suggest checking out: http://www.w3schools.com/js/default.asp

Answer 2

To ensure we are on the same page:

let s = "hello"; // this is a String, note the use of quotes
let a = [] // an empty Array
let b = ["hello", "bye"] // an Array with two elements

If the provided input is:

let input = "d[],e[], [dsh,sj]";
let output = input.replace(/.\[/g,"["); // resulting in '[],[],[dsh,sj]' but as a String data type

// this code block might be improved...
let splitted = output.replace(/],/g, "],,");
splitted = splitted.split(",,");
let array = [];

splitted.forEach(function(value) {
  value = value.replace(/\[|\]/g,"");

  if (value === "") {
    value = [];
  } else {
    value = value.split(",");
  }

  array.push(value);
});

console.log(array); // [[],[],["dsh","sj"]]

I suggest checking out: http://www.w3schools.com/js/default.asp

Subtract the initial character from the result

Answer №1

Similar questions

The function call to 'import firebase.firestore()' results in a value

Retrieve information from a JSON file containing multiple JSON objects for viewing purposes

Using arrays as data in an Ajax request for DataTables

Error: Router service provider not found in Angular 2 RC5!

Testing Vue Components - Simulating the return value of a plugin

Unable to display MongoDB collection in React application

Converting a stringified array of objects into an actual array of objects using Javascript

Rendering in ThreeJS Causes IE11 to Crash

Trouble with implementing an onclick event listener in a foreach loop

Angular2: the setTimeout function is executed just a single time

Navigating through nested JSON objects in React to display data effectively

Tips for submitting an Ajax Form with identical Name attributes?

PdfMake's loading speed is significantly impacted by the use of customized fonts in large sizes

JavaScript Code for Executing Function on Checkbox Checked/Unchecked

Executing an external Python script within a Vue application's terminal locally

There are certain lines of JavaScript/Node.js code that are failing to execute

Unlimited loading on middleware when implementing it within a post route

Using Three.js and WebGL to create transparent layers that conceal the planes positioned behind them

Populate a PHP array by cross-referencing it with data from a MySQL

Is it possible to prevent a line break in a div tag, or are there other options available?