javascript常用函数大全2
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”>  
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  
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  
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>  
15 弹出警告信息  
1: <script language=”JavaScript”>  
2: <!–  
3: window.alert(“Hello”);  
4: // –>  
5: </script>  
16 弹出确认框  
1: <script language=”JavaScript”>  
2: <!–  
3: var result = window.confirm(“Click OK to continue”);  
4: // –>  
5: </script>  
17 定义函数  
1: <script language=”JavaScript”>  
2: <!–  
3: function multiple(number1,number2) {  
4: var result = number1 * number2;  
5: return result;  
6: }  
7: // –>  
8: </script>  
18 调用JS函数  
1: <a href=”#” onClick=”functionName()”>Link text</a>  
2: <a href="/”javascript:functionName"()”>Link text</a>  
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