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How do I split a var, which I got from a text input on a "+", "-", "x" and "^"?

JavaScript

function integralinput() {
var a = document.getElementById("input").value;
console.log(a);
var b = a.split("x" + "^" + "+" + "-");
console.log(b);
}

html:

<input id="input" type="text"><label for="function">Funktion</label>
<input type="button" onclick="integralinput()" value="Run">

How do I split a var, which I got from a text input on a "+", "-", "x" and "^"?

JavaScript

function integralinput() {
var a = document.getElementById("input").value;
console.log(a);
var b = a.split("x" + "^" + "+" + "-");
console.log(b);
}

html:

<input id="input" type="text"><label for="function">Funktion</label>
<input type="button" onclick="integralinput()" value="Run">

• javascript

Share Improve this question Follow asked Jan 31, 2018 at 12:17 user8271158user8271158 2

• 2 You can split on regexes instead of strings... Have you tried a.split(/[x^+-]/) – jas7457 Commented Jan 31, 2018 at 12:21
• beside the obvious, what do you want do after splitting with the array? do you need the operators as well? – Nina Scholz Commented Jan 31, 2018 at 12:22

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2 Answers 2

Sorted by: Reset to default 8

Use a regex

var b = a.split(/[x^+-]/)

If you want only number you can use like this

function integralinput() {
var a = document.getElementById("input").value;
var b = a.match(/\d+/g).map(Number);
console.log(b);
}

<input value="10+20-3x5^6" id="input" type="text"><label for="function">Funktion</label>
<input type="button" onclick="integralinput()" value="Run">

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