繁體中文当前位置: 首页 > 图文教程 > 网络编程 > Javascript > JavaScript基本入门语法集合
- Javascript
- 仿搜狐女人频道FLASH图片切换效果
- JS CSS文章查看系统
- 走出JavaScript初学困境—js初学
- javascript 弹性菜单，垂直的那种
- javascript FormatNumber函数实现方法
- 动态创建的表格单元格中的事件实现代码
- js继承 Base类的源码解析
- javascript 一段代码引发的思考
- 很全的显示阴历（农历）日期的js代码
- 用于判断用户注册时，密码强度的JS代码
- JavaScript Prototype对象
- javascript 表单的友好用户体现
- javascript 方法覆写实例代码
- Javascript 生成指定范围数值随机数
- javascript 自动转到命名锚记
- 捕获关闭窗口的脚本
- 在网页里看flash的trace数据的js类
- JavaScript delete操作符应用实例
- js利用Array.splice实现Array的insert/remove
- JavaScript 私有成员分析
Javascript 中的 JavaScript基本入门语法集合
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-12 浏览: 305 ::
收藏到网摘: n/a
对于新手来说，掌握下面的方法，基本上就可以自己些js了，入门必备 创建脚本块
<script language=”JavaScript”>
JavaScript code goes here
</script>
隐藏脚本代码
<script language=”JavaScript”>
<!--
document.write(“Hello”);
// -->
</script>
浏览器不支持的时候显示
<noscript>
Hello to the non-JavaScript browser.
</noscript>
链接外部脚本文件
<script language=”JavaScript” src="/”youname.js"”></script>
注释脚本
// This is a comment
document.write(“Hello”); // This is a comment
/*
All of this
is a comment
*/
输出到浏览器
document.write(“<strong>输出内容</strong>”);
定义变量
var myVariable = “some value”;
字符串相加
var myString = “String1” + “String2”;
字符串搜索
<script language=”JavaScript”>
<!--
var myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// -->
</script>
字符串替换
thisVar.replace(“Monday”,”Friday”);
对于新手来说，掌握下面的方法，基本上就可以自己些js了，入门必备
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>”);
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>
创建数组
<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>
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>
分割字符串
<script language=”JavaScript”>
<!--
var 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]);
// -->
</script>
对于新手来说，掌握下面的方法，基本上就可以自己些js了，入门必备
弹出警告信息
<script language=”JavaScript”>
<!--
window.alert(“Hello”);
// -->
</script>
弹出确认框
<script language=”JavaScript”>
<!--
var result = window.confirm(“Click OK to continue”);
// -->
</script>
定义函数
<script language=”JavaScript”>
<!--
function multiple(number1,number2) {
var result = number1 * number2;
return result;
}
// -->
</script>
调用JS函数
<a href=”#” onClick=”functionName()”>Link text</a>
<a href="/”javascript:functionName"()”>Link text</a>
在页面加载完成后执行函数
<body onLoad=”functionName();”>
Body of the page
</body>
条件判断
<script>
<!--
var userChoice = window.confirm(“Choose OK or Cancel”);
var result = (userChoice == true) ? “OK” : “Cancel”;
document.write(result);
// -->
</script>
指定次数循环
<script>
<!--
var 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>”);
}
// -->
</script>
设定将来执行
<script>
<!--
function hello() {
window.alert(“Hello”);
}
window.setTimeout(“hello()”,5000);
// -->
</script>
定时执行函数
<script>
<!--
function hello() {
window.alert(“Hello”);
window.setTimeout(“hello()”,5000);
}
window.setTimeout(“hello()”,5000);
// -->
</script>
取消定时执行
<script>
<!--
function hello() {
window.alert(“Hello”);
}
var myTimeout = window.setTimeout(“hello()”,5000);
window.clearTimeout(myTimeout);
// -->
</script>
在页面卸载时候执行函数
<body onUnload=”functionName();”>
Body of the page
</body>
评论 (0) All
