how to replace string with function javascript variable code example
Example 1: javascript string replace
const p = 'Its going to rain today and its going to rain tomorrow';
// Example of replacing all occurrances
// g = global search, which searches all instances
// i = case insensitive, which will match 'a' with 'A'
const regex = /rain/gi;
console.log(p.replace(regex, 'snow'));
// expected output: "Its going to snow today and its going to snow tomorrow"
// Example of replacing the first occurance
console.log(p.replace('rain', 'snow'));
// expected output: "Its going to snow today and its going to rain tomorrow"
Example 2: replace in string javascript
const p = 'hello world ! hello everyone ! ';
const regex = /hello/gi;
console.log(p.replace(regex, 'good morning'));
// expected output: "good morning world ! good morning everyone !"
console.log(p.replace('hello', 'good evening'));
// expected output: "good evening world ! hello everyone !"