In JavaScript RegExp, the “m” modifier specifies a multiline match. ^ specifies a match at the start of a string. $ specifies a match at the end.

<!-- html element to place output -->
<p id="my_output"></p>

Search the beginning of each line.

// variables
let text = `Hello World
and
hello universe`

let pattern = /^and/m;
let result = text.match(pattern);

// output to the HTML element
document.getElementById('my_output').innerHTML = result;

Search the end of each line.

// variables
let text = `Hello World
and
hello universe`

let pattern = /World$/m;
let result = text.match(pattern);

// output to the HTML element
document.getElementById('my_output').innerHTML = result;

Search the beginning of each line.

and

Search the end of each line.

World

/regexp/m

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