Giới thiệu Java Script Các ví dụ Ví dụ 1 <script language="JavaScript"> <!-- function click() { if (event.button==2) { alert('Xin loi ! Ban khong the nhap nut phai duoc !'); } } document.onmousedown=click // --> </script> Ví dụ 2 <script language="javascript"> function bgcolor(obj,state) { if (state=="over") { obj.borderColor='#ff0000'; obj.style.backgroundColor='#ccccff'; } else { obj.borderColor='#ffffff'; obj.style.backgroundColor='#ffffff'; } } </script> <!---------------------------------> <table border="1" width="20%" id="table1" cellspacing="0" cellpadding="0" bordercolorlight="#FFFFFF" bordercolordark="#FFFFFF"> <tr onmouseover="bgcolor(this,'over')" onmouseout="bgcolor(this,'out')"> <td><a href="index.aspx">Trang chủ</a></td> </tr> <tr onmouseover="bgcolor(this,'over')" onmouseout="bgcolor(this,'out')"> <td>Tin tức mới nhất</td> </tr> <tr onmouseover="bgcolor(this,'over')" onmouseout="bgcolor(this,'out')"> <td>Sự kiện</td> </tr> </table> 1 Ví dụ 3 <script LANGUAGE="JavaScript"> <!-- dir="Images/"; menu1a = new Image(); menu1a.src = ""+dir+"lstt.gif"; menu1b = new Image(); menu1b.src = ""+dir+"lstt1.gif"; menu2a = new Image(); menu2a.src = ""+dir+"cctc.gif"; menu2b = new Image(); menu2b.src = ""+dir+"cctc1.gif"; menu3a = new Image(); menu3a.src = ""+dir+"ttmn.gif"; menu3b = new Image(); menu3b.src = ""+dir+"ttmn1.gif"; function active(imgName) { img2 = eval(imgName + "a.src"); document [imgName].src = img2; } function inactive(imgName) { img3 = eval(imgName + "b.src"); document [imgName].src = img3; } // --> </script> Khi gọi hàm <a href="http://www.vnn.vn" target="_self" onmouseover="inactive('menu1')" onmouseout="active('menu1')"><img src="Image/tctv.gif" width="155" height="25" border="0" name='menu1'></a> Ví dụ 4: javascript:history.back() Ví dụ 5: <script language="JavaScript"> var x = 0 var y = 0 var z = 140 var delay = 70 var text = "Hello and welcome to Vinh University" while (y ++ < z) {text = " " + text } function scroller() { window.status = text.substring(x++, text.length); if (x == text.length) { x = 0; } setTimeout("scroller()", delay); } scroller(); //--> </script> 2 . Giới thiệu Java Script Các ví dụ Ví dụ 1 < ;script language="JavaScript"> <!-- function click() { if. name='menu1'></a> Ví dụ 4: javascript:history.back() Ví dụ 5: < ;script language="JavaScript"> var x = 0 var y = 0 var z