JavaScript基礎知识整理.doc
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1 创建脚本块
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script language=”JavaScript”
JavaScript 代码写在这里面
/script
2 隐藏脚本代码
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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
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noscript
Hello to the non-JavaScript browser.
/noscript
4 链接外部脚本文件
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script language=”JavaScript” src=”/”filename.js””/script
5 注释脚本
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// This is a comment
document.write(“Hello”); // This is a comment
/*
All of this
is a comment
*/
6 输出到浏览器
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document.write(“strongHello/strong”);
7 定义变量
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var myVariable = “some value”;
8 字符串相加
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var myString = “String1” + “String2”;
9 字符串搜索
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script language=”JavaScript”
!–
var myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// –
/script
10 字符串替换
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thisVar.replace(“Monday”,”Friday”);
11 格式化字串
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script language=”JavaScript”
!–
var myVariable = “Hello there”;
document.write(myVariable.big() + “br”);
document.write(myVariable.blink() + “br”);
document.write(myVariable.bold() + “br”);
document.write(myVariable.fixed() + “br”);
document.write(myVariable.fontcolor(“red”) + “br”);
document.write(myVariable.fontsize(“18pt”) + “br”);
document.write(myVariable.italics() + “br”);
document.write(myVariable.small() + “br”);
document.write(myVariable.strike() + “br”);
document.write(myVariable.sub() + “br”);
document.write(myVariable.sup() + “br”);
document.write(myVariable.toLowerCase() + “br”);
document.write(myVariable.toUpperCase() + “br”);
var firstString = “My String”;
var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
// –
/script
12 创建数组
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script language=”JavaScript”
!–
var myArray = new Array(5);
myArray[0] = “First Entry”;
myArray[1] = “Second Entry”;
myArray[2] = “Third Entry”;
myArray[3] = “Fourth Entry”;
myArray[4] = “Fifth Entry”;
var anotherArray = new Array(“First Entry”,”Second Entry”,”Third Entry”,”Fourth Entry”,”Fifth Entry”);
// –
/script
13 数组排序
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scri
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