javascript也就这么回事 -----来自传智

JavaScript就这么回事1：基础知识    
1 创建脚本块   
<script language=”JavaScript”>   
JavaScript code goes here   
</script>    
2 隐藏脚本代码   
<script language=”JavaScript”>   
<!--   
document.write(“Hello”);   
// -->   
</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   
<noscript>   
Hello to the non-JavaScript browser.   
</noscript>    
4 链接外部脚本文件   
<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”>   
2: <!--   
3: var myArray = new Array(5);   
4: myArray[0] = “First Entry”;   
5: myArray[1] = “Second Entry”;   
6: myArray[2] = “Third Entry”;   
7: myArray[3] = “Fourth Entry”;   
8: myArray[4] = “Fifth Entry”;   
9: var anotherArray = new Array(“First Entry”,”Second Entry”,”Third Entry”,”Fourth Entry”,”Fifth Entry”);   
10: // -->   
11: </script>    
13 数组排序   

本帖隐藏的内容

1: <script language=”JavaScript”>   
2: <!--   
3: var myArray = new Array(5);   
4: myArray[0] = “z”;   
5: myArray[1] = “c”;   
6: myArray[2] = “d”;   
7: myArray[3] = “a”;   
8: myArray[4] = “q”;   
9: document.write(myArray.sort());   
10: // -->   
11: </script>   

14 分割字符串   

本帖隐藏的内容

1: <script language=”JavaScript”>   
2: <!--   
3: var myVariable = “a,b,c,d”;   
4: var stringArray = myVariable.split(“,”);   
5: document.write(stringArray[0]);   
6: document.write(stringArray[1]);   
7: document.write(stringArray[2]);   
8: document.write(stringArray[3]);   
9: // -->   
10: </script>