<html>
<body> <script type="text/javascript"> var txt="Hello World!"
document.write(txt.length) </script> </body>
</html>
<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() + "</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>
返回字符串中指定文本首次出现的位置 - indexOf()方法：
<html>
<body> <script type="text/javascript"> var str="Hello world!"
document.write(str.indexOf("Hello") + "<br />")
document.write(str.indexOf("World") + "<br />")
document.write(str.indexOf("world")) </script> </body>
</html>
效果如下：
查找字符串中特定的字符，若找到，则返回该字符 - match() 方法：
<html>
<body> <script type="text/javascript"> var str="Hello world!"
document.write(str.match("world") + "<br />")
document.write(str.match("World") + "<br />")
document.write(str.match("worlld") + "<br />")
document.write(str.match("world!")) </script> </body>
</html>
效果如下：
<html>
<body> <script type="text/javascript"> var str="Visit Microsoft!"
document.write(str.replace(/Microsoft/,"W3School")) </script>
</body>
</html>
效果如下：
