javascript当中string对象用法

马克java社区

修改于 2019-10-14 17:23:34

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修改于 2019-10-14 17:23:34

3.string对象 例 3.1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> </HEAD> <BODY> <Script> var hello = "HELLO mark!" with(document) { write(hello," ") write("马克-to-win第1个字符为："+hello.charAt(0)+" ") write("L在第"+hello.indexOf("L")+"个字符"+" ") write("L在第"+hello.lastIndexOf("L")+ "个字符"+" ") write("k在第"+hello.indexOf("k")+"个字符"+" ") /*String.fontsize() (Method) Encapsulates the string within an tag context.*/ write(hello.fontsize("5")+" ") /*和Array的slice 一样， fomer包括，latter不包括*/ write("截取第2至第4个字符:"+hello.substring(1,4)+" ") /* myString.substr(aStartPosition, aLength) Argument list: aStartPosition The index of the first character in the substring aLength The length of the substring */ write("截取从第2个字符开始的3个字符:"+hello.substr(1,4)+" ") write("转换为大写："+hello.toUpperCase()+" ") write("转换为小写："+hello.toLowerCase()+" ") } </Script> </BODY> </HTML> 更多请见：https://blog.csdn.net/qq_43650923/article/details/100140665

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