17 定義函數(shù)
1: <script language=”JavaScript”>2: <!--
3: function multiple(number1,number2) 
{
4: var result = number1 * number2;5: return result;6: }7: // -->8: </script>18 調(diào)用JS函數(shù)1: <a href=”#” onClick=”functionName()”>Link text</a>2: <a href="/”javascript:functionName"()”>Link text</a>19 在頁面加載完成后執(zhí)行函數(shù)1: <body onLoad=”functionName();”>2: Body of the page3: </body>20 條件判斷1: <script>2: <!--3: var userChoice = window.confirm(“Choose OK or Cancel”);4: var result = (userChoice == true) ? “OK” : “Cancel”;5: document.write(result);6: // -->7: </script>21 指定次數(shù)循環(huán)1: <script>2: <!--3: var myArray = new Array(3);4: myArray[0] = “Item 0”;5: myArray[1] = “Item 1”;6: myArray[2] = “Item 2”;7: for (i = 0; i < myArray.length; i++) {8: document.write(myArray + “<br>”);9: }10: // -->11: </script>22 設(shè)定將來執(zhí)行1: <script>2: <!--3: function hello() {4: window.alert(“Hello”);5: }6: window.setTimeout(“hello()”,5000);7: // -->8: </script>23 定時執(zhí)行函數(shù)1: <script>2: <!--3: function hello() {4: window.alert(“Hello”);5: window.setTimeout(“hello()”,5000);6: }7: window.setTimeout(“hello()”,5000);8: // -->9: </script>24 取消定時執(zhí)行1: <script>2: <!--3: function hello() {4: window.alert(“Hello”);5: }6: var myTimeout = window.setTimeout(“hello()”,5000);7: window.clearTimeout(myTimeout);8: // -->9: </script>
25 在頁面卸載時候執(zhí)行函數(shù)1: <body onUnload=”functionName();”>2: Body of the page3: </body>JavaScript就這么回事2：瀏覽器輸出26 訪問document對象1: <script language=”JavaScript”>2: var myURL = document.URL;3: window.alert(myURL);4: </script>27 動態(tài)輸出HTML1: <script language=”JavaScript”>2: document.write(“<p>Here’s some information about this document:</p>”);3: document.write(“<ul>”);4: document.write(“<li>Referring Document: “ + document.referrer + “</li>”);5: document.write(“<li>Domain: “ + document.domain + “</li>”);6: document.write(“<li>URL: “ + document.URL + “</li>”);7: document.write(“</ul>”);8: </script>28 輸出換行1: document.writeln(“<strong>a</strong>”);2: document.writeln(“b”);
