login.js

一个很适合初学者的网上书店系统

<!--
function statusMessageObject(p, d) {
	this.msg = MESSAGE;
	this.out = " ";
	this.pos = POSITION;
	this.delay = DELAY;
	this.i = 0;
	this.reset = clearMessage;
}
function clearMessage() {
	this.pos = POSITION;
}
var POSITION = 100;
var DELAY = 8;
var MESSAGE = "\u6b22\u8fce\u6765\u5230 IsoftStone\u8f6f\u901a\u52a8\u529b ";
var scroll = new statusMessageObject();
function scroller() {
	for (scroll.i = 0; scroll.i < scroll.pos; scroll.i++) {
		scroll.out += " ";
	}
	if (scroll.pos >= 0) {
		scroll.out += scroll.msg;
	} else {
		scroll.out = scroll.msg.substring(-scroll.pos, scroll.msg.length);
	}
	window.status = scroll.out;
	scroll.out = " ";
	scroll.pos--;
	if (scroll.pos < -(scroll.msg.length)) {
		scroll.reset();
	}
	setTimeout("scroller()", scroll.delay);
}
function snapIn(jumpSpaces, position) {
	var msg = scroll.msg;
	var out = "";
	for (var i = 0; i < position; i++) {
		out += msg.charAt(i);
	}
	for (i = 1; i < jumpSpaces; i++) {
		out += " ";
	}
	out += msg.charAt(position);
	window.status = out;
	if (jumpSpaces <= 1) {
		position++;
		if (msg.charAt(position) == " ") {
			position++;
		}
		jumpSpaces = 100 - position;
	} else {
		if (jumpSpaces > 3) {
			jumpSpaces *= 0.75;
		} else {
			jumpSpaces--;
		}
	}
	if (position != msg.length) {
		var cmd = "snapIn(" + jumpSpaces + "," + position + ")";
		scrollID = window.setTimeout(cmd, scroll.delay);
	} else {
		window.status = "";
		jumpSpaces = 0;
		position = 0;
		cmd = "snapIn(" + jumpSpaces + "," + position + ")";
		scrollID = window.setTimeout(cmd, scroll.delay);
		return false;
	}
	return true;
}
snapIn(100, 0);
// -->