Js | String split by the first whitespace

Question

Im trying to split a user input value by the first space.

Example: User inputs the following command: /command test command into a input field.

The code now removes the first charackter in that string which would be: /

Now the code should split the remaining input ("command test command") by the first whitespace, so the following would remain:

command
test command

My problem is the following: My code splits the command at any whitespace. A example is made here:

$("#execute").click(function() {
  var command = $("#command").val().substr(1);
  var args = command.split(/[ ]+/);
  var commandName = args[0];
  args.shift()
  
 $("#content").text("Command: " + commandName + " Text: " + args);
});

<!DOCTYPE html>
<html>

  <head>
    <meta charset="UTF-8">
    <title>Berechnen votes</title>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  </head>

  <body>
    <input id="command" type="text" value="/command test command">
    <button id="execute">Execute</button>
    <br><br>
    <span id="content"></span>
  </body>

</html>

I appreciate any kind of help!

Edited the question, didnt work out as i expected it before. — pr0b, Jun 29 '18 at 13:10
After extracting the word `command` from the array, the remaining items in the array is the rest, so just join them together again? You could use a more complicated splitting regex, but for trivial things like this, that seems overkill. — Shilly, Jun 29 '18 at 13:11
`.indexOf(' ')` will give you the position of the first space, `.substr()` will let you read before/after that point. — Alex K., Jun 29 '18 at 13:11
Possible duplicate of [How to split a string in Java](https://stackoverflow.com/questions/3481828/how-to-split-a-string-in-java) — Leo K, Jun 29 '18 at 14:16

score 0 · Accepted Answer · answered Jun 29 '18 at 13:18

0

You should use a regular expression:

let input = " /command test command";
let [, command, args] = input.match(/^\W*(\S+)\s+(.*)$/);

console.log("command:", command);
console.log("args:", args);

answered Jun 29 '18 at 13:18

Denys Séguret

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Js | String split by the first whitespace

1 Answers1