初学网页Javascript经典小教程总结

适合阅读范围：对JavaScript一无所知～离精通只差一步之遥的人
基础知识：HTML

JavaScript就这么回事1：基础知识

1 创建脚本块

1: <script language=”JavaScript”>
2: JavaScript code goes here
3: </script>

2 隐藏脚本代码

1: <script language=”JavaScript”>
2: <!--
3: document.write(“Hello”);
4: // -->
5: </script>

在不支持JavaScript的浏览器中将不执行相关代码

3 浏览器不支持的时候显示

1: <noscript>
2: Hello to the non-JavaScript browser.
3: </noscript>

4 链接外部脚本文件

1: <script language=”JavaScript” src="/”filename.js"”></script>

5 注释脚本

1: // This is a comment
2: document.write(“Hello”); // This is a comment
3: /*
4: All of this
5: is a comment
6: */

6 输出到浏览器

1: document.write(“<strong>Hello</strong>”);


7 定义变量

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 字符串替换

1: thisVar.replace(“Monday”,”Friday”);

11 格式化字串

1: <script language=”JavaScript”>
2: <!--
3: var myVariable = “Hello there”;
4: document.write(myVariable.big() “<br>”);
5: document.write(myVariable.blink() “<br>”);
6: document.write(myVariable.bold() “<br>”);
7: document.write(myVariable.fixed() “<br>”);
8: document.write(myVariable.fontcolor(“red”) “<br>”);
9: 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:
18: var firstString = “My String”;
19: var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
20: // -->
21: </script>

12 创建数组

1: <script language=”JavaScript”>
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