string.remove javascript code example

Example 1: js remove string from string

var ret = "data-123".replace('data-','');
console.log(ret);   //prints: 123

Example 2: js remove string from string

var ret = "data-123".replace(/data-/g,'');

Example 3: 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"