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JavaScript Regular Expressions
Regular expressions are a string of characters describing a search pattern. This search pattern is then used to specify what we are searching in a text.
Following is the code for regular expressions in JavaScript −
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.sample,.result{
font-size: 18px;
font-weight: 500;
color:red;
}
</style>
</head>
<body>
<h1>JavaScript Regular Expressions</h1>
<div class="sample">The king bought the ring and went to the palace.</div>
<div style='color:black' class="result"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to replace king with queen in the text above
</h3>
<script>
let sampleEle = document.querySelector('.sample');
let resultEle = document.querySelector('.result');
document.querySelector('.Btn').addEventListener('click',()=>{
let newText = sampleEle.innerHTML.replace(/king/gi,'queen');
resultEle.innerHTML = 'Result = ' + newText;
})
</script>
</body>
</html>
output
The above code will produce the following output -
On clicking the ‘CLICK HERE’ button −
Updated on: 2020-05-11T14:36:01+05:30
409 Views
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