How to Get Substring before a specific Character in JavaScript?

JavaScript · 12-Apr-2023

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This simple article demonstrates of how to get substring before a specific character in javascript?. In this article, we will implement a get the substring before a specific character in javascript. you will learn how to get substring before specific character in javascript?. This article goes in detailed on how to get a part of string after a specified character in javascript?. follow bellow step for get substring before a specific character.

There are several ways to get a substring before a specific character in JavaScript. Here are some examples:

Example 1: Using the indexOf() method

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>How to Get Substring before a specific Character in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
    let str = "hello world";
    let index = str.indexOf(" ");
    let substr = str.substring(0, index);
    console.log(substr); // Output: "hello"
</script>
</html>

Example 2: Using the slice() method

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>How to Get Substring before a specific Character in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
    let str = "hello world";
    let index = str.indexOf(" ");
    let substr = str.slice(0, index);
    console.log(substr); // Output: "hello"
</script>
</html>

Example 3: Using the split() method

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>How to Get Substring before a specific Character in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
    let str = "hello world";
    let substr = str.split(" ")[0];

    
    console.log(substr); // Output: "hello"
</script>
</html>

Example 4: Using regular expressions

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>How to Get Substring before a specific Character in JavaScript? - NiceSnippets.Com</title>
</head>
<body>
</body>
<script type="text/javascript">
    let str = "hello world";
    let regex = /(.+?)\s/;
    let substr = regex.exec(str)[1];
    console.log(substr); // Output: "hello"
</script>
</html>