JavaScript方法和技巧大全——基础知识（1）

创建脚本块

1<script language=”JavaScript”>
2JavaScript code goes here
3</script>

隐藏脚本代码

1<script language=”JavaScript”>
2<!--
3document.write(“Hello”);
4-->
5</script>

浏览器不支持的时候显示

1<noscript>
2Hello to the non-JavaScript browser.
3</noscript>

链接外部脚本文件

1<script language=”JavaScript” src="/”filename.js"”></script>

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 */

输出到浏览器1document.write(“<strong>Hello</strong>”);

定义变量

1var myVariable = “some value”;

字符串相加

1var myString = “String1” + “String2”;

字符串搜索

1<script language=”JavaScript”>
2 var myVariable = “Hello there”;
3 var therePlace = myVariable.search(“there”);
4 document.write(therePlace);
5</script>

字符串替换

1<script language=”JavaScript”>
2 thisVar.replace(“Monday”,”Friday”);
3</script>