<html><head><title>study 008</title></head><body><h1>string.substring();测试</h1><p><script language="javascript" type="text/javascript">...var alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";document.write("alpha = " + alpha + "<br>");document.write("alpha.substring(0, 4) = " + alpha.substring(0, 4) + "<br>");document.write("alpha.substring(10, 12) = " + alpha.substring(10, 12) + "<br>");document.write("alpha.substring(12, 10) = " + alpha.substring(12, 10) + "<br>");document.write("alpha.substring(6, 7) = " + alpha.substring(6, 7) + "<br>");document.write("alpha.substring(24, 26) = " + alpha.substring(24, 26) + "<br>");document.write("alpha.substring(0, 26) = " + alpha.substring(0, 26) + "<br>");document.write("alpha.substring(6, 6) = " + alpha.substring(6, 6) + "<br>");</script></p></body></html>