JavaScript字符串对象(string)基本用法示例

vars ="Hello world";

document.write("length:"+s.length);

vartxt ="Some words";

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("

Link: "+ txt.link("http://www.jb51.net") +"

varhw_text ="Hello world";

document.write(hw_text.indexOf("Hello")+"
");

document.write(hw_text.indexOf("world")+"
");

document.write(hw_text.indexOf("abc")+"
");

varstr="Visit Microsoft!"

document.write(str.replace(/Microsoft/,"W3School"))

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

（一）length属性：获取字符串的长度

Hello world, Hello javascript!

（二）为字符串添加样式

对字符串调用样式的相关方法时，会自动拼接相应的html标签

some words

 Call txt.big()

（三）indexOf方法:定位字符串中某一个指定的字符首次出现的位置

（四）replace()方法：替换字符串中的部分内容