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[Java教程]JavaScript toUpperCase() 方法

toUpperCase() 方法用于把字符串转换为大写。

一个新的字符串,在其中 stringObject 的所有小写字符全部被转换为了大写字符。

 语法为:

stringObject.toUpperCase()

实例

在本例中,"Hello world!" 将以大写字母来显示:

<script type="text/javascript">var str="Hello World!"document.write(str.toUpperCase())</script>

效果如下;

 

相关方法举例如下:

<html><body><script type="text/javascript">var txt="Hello World!"document.write("<p>Big: " + txt.big() + "</p>")document.write("<p>Small: " + txt.small() + "</p>")document.write("<p>Bold: " + txt.bold() + "</p>")document.write("<p>Italic: " + txt.italics() + "</p>")document.write("<p>Blink: " + txt.blink() + " (does not work in IE)</p>")document.write("<p>Fixed: " + txt.fixed() + "</p>")document.write("<p>Strike: " + txt.strike() + "</p>")document.write("<p>Fontcolor: " + txt.fontcolor("Red") + "</p>")document.write("<p>Fontsize: " + txt.fontsize(16) + "</p>")document.write("<p>Lowercase: " + txt.toLowerCase() + "</p>")document.write("<p>Uppercase: " + txt.toUpperCase() + "</p>")document.write("<p>Subscript: " + txt.sub() + "</p>")document.write("<p>Superscript: " + txt.sup() + "</p>")document.write("<p>Link: " + txt.link("http://www.w3school.com.cn") + "</p>")</script></body></html>

 效果如下: