I have a regular expression that looks like this: /\\.br<[0-9]+>\\/g. I am looking to replace it within the main text with the number of new lines specified between the <> in the regular expression.
For example, input:
Hello \.br<3>\ World!
Output:
Hello
World!
Your regular expression /\\.br<[0-9]+>\\/g is not correct. In the regex context, the period (.) means "any character except for line breaks". Therefore, you must escape the dot in your regex pattern.
/\\\.br<[0-9]+>\\/g
/(\\\.br<([0-9]+)>\\)/g
When considering using String.prototype.replace as suggested by T.J. Crowder, a possible solution could be:
function replacer(match, p1, p2, offset, string) {
let result = '';
for (let i = 0; i < Number(p2); i++) {
result += '\n';
}
return result;
}
var newString = String('Hello \\.br<3>\\ World!').replace(/(\\\.br<([0-9]+)>\\)/g, replacer);
console.log(newString);Keep in mind that the hardcoded string in the code includes two backslashes (\\) since it is an escape character. However, when getting the string from a user input field, entering just one backslash (\) is sufficient.
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