Remove all string after a space [closed]

Question

I have this variable

c#

string text = "val1  val2";

javastript

var text = "val1  val2"

I need a example to remove everything after the space so that the result is string textModified = "val1";

Can u help me?

Answer 1

One example would be:

c#

string text = "val1  val2";
string textModified = text.Split(' ')[0];
//Another way:
string textModified = text.IndexOf(' ');
var textModified = text.Substring(0, index);

Js

    var text = "val1  val2";
    var textModified = text.Split(' ')[0];

    // Another way:
    var index = text.indexOf(' ');
    var textModified = text.substring(0, index);

Answer 2

In both the cases, just split on " " and take the element on index 0. The below is for javascript

alert(text.split(" ")[0]); // Javascript

And this is for c#

Console.WriteLine(text.Split(' ')[0]);

Answer 3

You can use String.Remove to remove everything after space. Use String.IndexOf to find space in the string.

string text = "val1  val2";
string newText = text.Remove(text.IndexOf(' '));

You can also check if the string contains a space or not like:

if (text.Contains(' '))
{
    string newText = text.Remove(text.IndexOf(' '));
}

This will save you from the exception in case of absence of space in the string.

As for JavaScript: you can do:

console.log(text.substr(0,text.indexOf(' ')));

Should add checking for presence of space as well.

Answer 4

here another approach with SubString

string text = "val1 val2";
int Space = text.IndexOf(' ');
string textModified = text.Substring(0, Space > 0 ? Space : text.Length);

and Linq

string text = "val1 val2";
string textModified = new string(text.TakeWhile(x => x != ' ').ToArray());

Answer 5

Rather than splitting:

var word = text.substr(0, (text + " ").indexOf(" "));

(Swap to .Substring / .IndexOf in C#)

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For fun, C# and JS (ES5) both:

var output = ""; var i = 0;
text += " ";
while (text[i] != ' ')
    output += text[i++];