JavaScript: Clone a given regular expression
JavaScript fundamental (ES6 Syntax): Exercise-63 with Solution
Clone Regular Expression
Write a JavaScript program to clone a given regular expression.
- Use new RegExp(), RegExp.prototype.source and RegExp.prototype.flags to clone the given regular expression.
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
// Define a function 'cloneRegExp' to create a clone of a regular expression.
const cloneRegExp = regExp => new RegExp(regExp.source, regExp.flags);
// Define a regular expression.
const regExp = /lorem ipsum/gi;
console.log(regExp); // Output the original regular expression.
// Create a clone of the original regular expression using 'cloneRegExp'.
const regExp2 = cloneRegExp(regExp);
console.log(regExp2); // Output the cloned regular expression.
Output:
{} {}
Flowchart:
Live Demo:
See the Pen javascript-basic-exercise-63-1 by w3resource (@w3resource) on CodePen.
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