文档介绍：Js基础代码1创建脚本块引用内容程序代码<scriptlanguage=”JavaScript”>JavaScript代码写在这里面</script>2隐藏脚本代码引用内容程序代码<scriptlanguage=”JavaScript”><!–(“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引用内容程序代码<noscript>Hellotothenon-JavaScriptbrowser.</noscript>4链接外部脚本文件引用内容程序代码<scriptlanguage=”JavaScript”src=”/”””></script>5注释脚本引用内容程序代码//(“Hello”);//ment/*ment*/(“<strong>Hello</strong>”);7定义变量引用内容程序代码varmyVariable=“somevalue”;8字符串相加引用内容程序代码varmyString=“String1”+“String2”;9字符串搜索引用内容程序代码<scriptlanguage=”JavaScript”><!–varmyVariable=“Hellothere”;vartherePlace=(“there”);(therePlace);//–></script>(“Monday”,”Friday”);11格式化字串引用内容程序代码<scriptlanguage=”JavaScript”><!–varmyVariable=“Hellothere”;(()+“<br>”);(()+“<br>”);(()+“<br>”);(()+“<br>”);((“red”)+“<br>”);((“18pt”)+“<br>”);(()+“<br>”);(()+“<br>”);(()+“<br>”);(()+“<br>”);(()+“<br>”);(()+“<br>”);(()+“<br>”);varfirstString=“MyString”;varfinalString=().toLowerCase().fontcolor(“red”);//–></script>12创建数组引用内容程序代码<scriptlanguage=”JavaScript”><!–varmyArray=newArray(5);myArray[0]=“FirstEntry”;myArray[1]=“SecondEntry”;myArray[2]=“ThirdEntry”;myArray[3]=“FourthEntry”;myArray[4]=“FifthEntry”;varanotherArray=newArray(“FirstEntry”,”SecondEntry”,”ThirdEntry”,”FourthEntry”,”FifthEntry”);//–></script>13数组排序引用内容程序代码<scriptlanguage=”JavaScript”><!–varmyArray=newArray(5);myArray[0]=“z”;myArray[1]=“c”;myArray[2]=“d”;myArray[3]=“a”;myArray[4]=“q”;(());//–></script>14分割字符串引用内容程序代码<scriptlanguag