javascript - check whether string contains a line break

Question

So, I have to get HTML of textarea and check whether it contains line break. How can i see whether it contain because the string return using val() does not contain and i am not able to detect it. I tried using .split(" ") but it gave the same result. How can it be done ?

One minute, IDK why when i add to textarea as value, it breaks and move to next line.

Answer 1

Line breaks in HTML aren't represented by or . They can be represented in lots of ways, including the <br> element, or any block element following another (<p></p><p></p>, for instance).

If you're using a textarea, you may find or (or ) for line breaks, so:

var text = $("#theTextArea").val();
var match = /
|
/.exec(text);
if (match) {
    // Found one, look at `match` for details, in particular `match.index`
}

Live Example | Source

...but that's just textareas, not HTML elements in general.