返回字符串的长度：
<script type="text/javascript">
var txt="Hello World!"
document.write(txt.length)
为字符串添加样式：
<script type="text/javascript">
var txt="Hello World!"
document.write("
Big: " + txt.big() + "
")document.write("
Small: " + txt.small() + "
")document.write("
Bold: " + txt.bold() + "
")document.write("
Italic: " + txt.italics() + "
")document.write("
Blink: " + txt.blink() + " (does not work in IE)
")document.write("
Fixed: " + txt.fixed() + "
")document.write("
Strike: " + txt.strike() + "
")document.write("
Fontcolor: " + txt.fontcolor("Red") + "
")document.write("
Fontsize: " + txt.fontsize(16) + "
")document.write("
Lowercase: " + txt.toLowerCase() + "
")document.write("
Uppercase: " + txt.toUpperCase() + "
")document.write("
Subscript: " + txt.sub() + "
")document.write("
Superscript: " + txt.sup() + "
")document.write("
Link: " + txt.link("http://www.w3school.com.cn") + "
")返回字符串中指定文本首次出现的位置 - indexOf()方法：
<script type="text/javascript">
var str="Hello world!"
document.write(str.indexOf("Hello") + "
")
document.write(str.indexOf("World") + "
")
document.write(str.indexOf("world"))
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：
<script type="text/javascript">
var str="Hello world!"
document.write(str.match("world") + "
")
document.write(str.match("World") + "
")
document.write(str.match("worlld") + "
")
document.write(str.match("world!"))
效果如下：
替换字符串中的字符 - replace()：
<script type="text/javascript">
var str="Visit Microsoft!"
document.write(str.replace(/Microsoft/,"W3School"))
效果如下：
以上这篇JavaScript String(字符串)对象的简单实例(推荐)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持编程之家。
