本文把有關JavaScript的方法和技巧整理下，讓每個在為JavaScript而煩惱的人明白，JavaScript就這么回事！并希望JavaScript還可以成為你的朋友，讓你豁然開朗，在項目中更好的應用～ 適合閱讀范圍：對JavaScript一無所知～離精通只差一步之遙的人
有些時候你精通一門語言，但是會發現你其實整天在和其它語言打交道，也許你以為這些微不足道，不至于影響你的開發進度，但恰恰是這些你不重視的東西會浪費你很多時間，我一直以為我早在幾年前就已經精通JavaScript了，直到目前，我才越來越覺得JavaScript遠比我想象的復雜和強大，我開始崇拜它，就像崇拜所有OOP語言一樣～
趁著節日的空隙，把有關JavaScript的方法和技巧整理下，讓每個在為JavaScript而煩惱的人明白，JavaScript就這么回事！并希望JavaScript還可以成為你的朋友，讓你豁然開朗，在項目中更好的應用～
適合閱讀范圍：對JavaScript一無所知～離精通只差一步之遙的人
基礎知識：HTML
JavaScript就這么回事：基礎知識
1 創建腳本塊
<script language="JavaScript">
JavaScript code goes here
</script>
2 隱藏腳本代碼
1 <script language="JavaScript">
2 <!--
3 document.write("Hello");
4 // -->
5 </script>
在不支持JavaScript的瀏覽器中將不執行相關代碼
3 瀏覽器不支持的時候顯示
1 <noscript>
2 Hello to the non-JavaScript browser.
3 </noscript>
4 鏈接外部腳本文件
1 <script language="JavaScript" src="filename.js"></script>
5 注釋腳本
1 // This is a comment
2 document.write("Hello"); // This is a comment
3 /*
4 All of this
5 is a comment
6 */
6 輸出到瀏覽器
1 document.write("<strong>Hello</strong>");
7 定義變量
1 var myVariable = "some value";
8 字符串相加
1 var myString = "String1" + "String2";
9 字符串搜索
1 <script language="JavaScript">
2 <!--
3 var myVariable = "Hello there";
4 var therePlace = myVariable.search("there");
5 document.write(therePlace);
6 // -->
7 </script>
10 字符串替換
1 thisVar.replace("Monday","Friday");
11 格式化字串
01 <script language="JavaScript">
02 <!--
03 var myVariable = 'Hello there";
04 document.write(myVariable.big() + "<br>");
05 document.write(myVariable.blink() + "<br>");
06 document.write(myVariable.bold() + "<br>");
07 document.write(myVariable.fixed() + "<br>");
08 document.write(myVariable.fontcolor("red") + "<br>");
09 document.write(myVariable.fontsize("18pt") + "<br>");
10 document.write(myVariable.italics() + "<br>");
11 document.write(myVariable.small() + "<br>");
12 document.write(myVariable.strike() + "<br>");
13 document.write(myVariable.sub() + "<br>");
14 document.write(myVariable.sup() + "<br>");
15 document.write(myVariable.toLowerCase() + "<br>");
16 document.write(myVariable.toUpperCase() + "<br>");
17 var firstString = "My String";
18 var finalString = firstString.bold().toLowerCase().fontcolor("red");
19 // -->
20 </script>
12 創建數組
01 <script language="JavaScript">
02 <!--
03 var myArray = new Array(5);
04 myArray[0] = "First Entry";
05 myArray[1] = "Second Entry";
06 myArray[2] = "Third Entry";
07 myArray[3] = "Fourth Entry";
08 myArray[4] = "Fifth Entry";
09 var anotherArray = new Array("First Entry","Second Entry","Third Entry","Fourth Entry","Fifth Entry");
10 // -->
11 </script>
13 數組排序
01 <script language="JavaScript">
02 <!--
03 var myArray = new Array(5);
04 myArray[0] = "z";
05 myArray[1] = "c";
06 myArray[2] = "d";
07 myArray[3] = "a";
08 myArray[4] = "q";
09 document.write(myArray.sort());
10 // -->
11 </script>
14 分割字符串
01 <script language="JavaScript">
02 <!--
03 var myVariable = "a,b,c,d";
04 var stringArray = myVariable.split(",");
05 document.write(stringArray[0]);
06 document.write(stringArray[1]);
07 document.write(stringArray[2]);
08 document.write(stringArray[3]);
09 // -->
10 </script>
15 彈出警告信息
1 <script language="JavaScript">
2 <!--
3 window.alert("Hello");
4 // -->
5 </script>
16 彈出確認框
1 <script language="JavaScript">
2 <!--
3 var result = window.confirm("Click OK to continue");
4 // -->
5 </script>
17 定義函數
1 <script language="JavaScript">
2 <!--
3 function multiple(number1,number2) {
4 var result = number1 * number2;
5 return result;
6 }
7 // -->
8 </script>
18 調用JS函數
1 <a href="#" onClick="functionName()">Link text</a>
2 <a >Link text</a>
19 在頁面加載完成后執行函數
1 <body onLoad="functionName();">
2 Body of the page
3 </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 指定次數循環
01 <script>
02 <!--
03 var myArray = new Array(3);
04 myArray[0] = "Item 0";
05 myArray[1] = "Item 1";
06 myArray[2] = "Item 2";
07 for (i = 0; i < myArray.length; i++) {
08 document.write(myArray[i] + "<br>");
09 }
10 // -->
11 </script>
22 設定將來執行
1 <script>
2 <!--
3 function hello() {
4 window.alert("Hello");
5 }
6 window.setTimeout("hello()",5000);
7 // -->
8 </script>
23 定時執行函數
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>