JavaScript就这么回事(转)
注: 本文为转载
有些时候你精通一门语言，但是会发现你其实整天在和其它语言打交道，也许你以为这些微不足道，不至于影响你的开发进度，但恰恰是这些你不重视的东西会浪费你很多时间，我一直以为我早在几年前就已经精通JavaScript了，直到目前，我才越来越觉得JavaScript远比我想象的复杂和强大，我开始崇拜它，就像崇拜所有OOP语言一样～
趁着节日的空隙，把有关JavaScript的方法和技巧整理下，让每个在为JavaScript而烦恼的人明白，JavaScript就这么回事！并希望JavaScript还可以成为你的朋友，让你豁然开朗，在项目中更好的应用～
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
<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
// This is a comment
document.write(“Hello”); // This is a comment
/*
All of this
is a comment
*/
6 输出到浏览器
document.write(“<strong>Hello</strong>”);
7 定义变量
var myVariable = “some value”;
8 字符串相加
var myString = “String1” + “String2”;
9 字符串搜索
<script language=”JavaScript”>
<!--
var myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// -->
</script>
10 字符串替换
thisVar.replace(“Monday”,”Friday”);
11 格式化字串
<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>”);
1 document.write(myVariable.strike() + “<br>”);
1document.write(myVariable.sub() + “<br>”);
1document.write(myVariable.sup() + “<br>”);
1document.write(myVariable.toLowerCase() + “<br>”);
1 document.write(myVariable.toUpperCase() + “<br>”);
1
1 var firstString = “My String”;
1 var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
20: // -->
21: </script>
12 创建数组
1: <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
<script language=”JavaScript”>
<!--
var myArray = new Array(5);
myArray[0] = “z”;
myArray[1] = “c”;
myArray[2] = “d”;
myArray[3] = “a”;
myArray[4] = “q”;
document.write(myArray.sort());
// -->
</script>