Simple jQuery scripts

The post contains simple but useful implications of jQuery. Set temporary blink effect on element:

$('#ok_message').fadeOut(400).fadeIn(400).fadeOut(400).fadeIn(400);

Reset web form:

$('#myform')[0].reset();

Detect the scroll direction:

var lastScrollTop = 0;
$(document).scroll(function(event){
    var st = $(this).scrollTop();
    if (st > lastScrollTop){
	console.log('scrolling down...');
    } else {
	console.log('scrolling up...');
    }
    lastScrollTop = st;
});

Get the length of textarea value while considering the new lines as two symbols (bytes):

$('#example').on("paste keyup cut", function(e) {
    var value = $(this).val();
    value_length = value.replace(/\r(?!\n)|\n(?!\r)/g, "\r\n").length;
    if(e.type == 'paste') {
	value_length += e.originalEvent.clipboardData.getData('text').replace(/\r(?!\n)|\n(?!\r)/g, "\r\n").length;
    } else if(e.type == 'cut') {
	value_length -= window.getSelection().toString().replace(/\r(?!\n)|\n(?!\r)/g, "\r\n").length;
    }
    console.log(value_length);
});