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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
1 创建脚本块
script language=”JavaScript”>
JavaScript code goes here
2 隐藏脚本代码
script language=”JavaScript”>
document.write(“Hello”);
// -->
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”>
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>Hellostrong>”);
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”>
myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// -->
10 字符串替换
thisVar.replace(“Monday”,”Friday”);
11 格式化字串
script language=”JavaScript”>
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”);
// -->
12 创建数组
script language=”JavaScript”>
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”);
// -->
13 数组排序
script language=”JavaScript”>
myArray = new Array(5);
myArray[0] = “z”;
myArray[1] = “c”;
myArray[2] = “d”;
myArray[3] = “a”;
myArray[4] = “q”;
document.write(myArray.sort());
// -->
14 分割字符串
script language=”JavaScript”>
myVariable = “a,b,c,d”;
var stringArray = myVariable.split(“,”);
document.write(stringArray[0]);
document.write(stringArray[1]);
document.write(stringArray[2]);
document.write(stringArray[3]);
// -->
15 弹出警告信息
script language=”JavaScript”>
window.alert(“Hello”);
// -->
16 弹出确认框
script language=”JavaScript”>
result = window.confirm(“Click OK to continue”);
// -->
17 定义函数
script language=”JavaScript”>
multiple(number1,number2) {
var result = number1 * number2;
return result;
}
// -->
18 调用JS函数
a href=”#” onClick=”functionName()”>Link text
a href=”javascript:functionName()”>Link texta>
19 在页面加载完成后执行函数
body onLoad=”functionName();”>
Body of the page
body>
20 条件判断
script>
userChoice = window.confirm(“Choose OK or Cancel”);
var result = (userChoice == true) ? “OK” : “Cancel”;
document.write(result);
// -->
21 指定次数循环
script>
myArray = new Array(3);
myArray[0] = “Item 0”;
myArray[1] = “Item 1”;
myArray[2] = “Item 2”;
for (i = 0; i myArray.length; i++) {
document.write(myArray + “br>”);
}
// -->
22 设定将来执行
script>
hello() {
window.alert(“Hello”);
}
window.setTimeout(“hello()”,5000);
// -->
23 定时执行函数
script>
hello() {
window.alert(“Hello”);
window.setTimeout(“hello()”,5000);
}
window.setTimeout(“hello()”,5000);
// -->
24 取消定时执行
script>
hello() {
window.alert(“Hello”);
}
var myTimeout = window.setTimeout(“hello()”,5000);
window.clearTimeout(myTimeout);
// -->
25 在页面卸载时候执行函数
body onUnload=”functionName();”>
Body of the page
body>
本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/15511/showart_97520.html |
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发表于 2006-04-10 00:19