javascript - validator.js and detecting line breaks

Question

So i'm trying to build a script that will essentially count the line breaks in an inputed text field and then use a validator to check if the data inputed has too many rows. For example this could be the input:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque nisl eros, 
pulvinar facilisis justo mollis, auctor consequat urna. Morbi a bibendum metus. 
Donec scelerisque sollicitudin enim eu venenatis. Duis tincidunt laoreet ex, 
in pretium orci vestibulum eget. Class aptent taciti sociosqu ad litora torquent
per conubia nostra, per inceptos himenaeos. Duis pharetra luctus lacus ut 
vestibulum. Maecenas ipsum lacus, lacinia quis posuere ut, pulvinar vitae dolor.
Integer eu nibh at nisi ullamcorper sagittis id vel leo. Integer feugiat 
faucibus libero, at maximus nisl suscipit posuere. Morbi nec enim nunc. 
Phasellus bibendum turpis ut ipsum egestas, sed sollicitudin elit convallis. 
Cras pharetra mi tristique sapien vestibulum lobortis.

Here there would be 10 new lines of text. Currently I'm struggling to find a solution to this issue. Any advice would be greatly appreciated.

Thanks!!

标签： javascriptreactjsstringvalidator.js