28 JavaScript string 对象 - I
任意常量如 "Hello World!" 或文本型值的变量在Javascript中都是一个string对象 -- 这里是第一个例子
/* Add stem to newurl if latter is a relative address */
/* stem must end with a slash */
function checkurl(stem,newurl) {
var len = newurl.length; // length Property of string object
var stemlen = stem.length;
if( len < 7 ) {
return (stem + newurl); } // Input was not absolute
var grab = newurl.substring(0,6); // Get first six characters
if( (grab == "ftp://") || (grab == "http:/") )
return newurl; // input was definitely absolute
return (stem + newurl);
}
function seturl(name) {
name.href = checkurl("http://www.npac.syr.edu/users/gcf/wisdom/","List.html");
}
Copyright: NPACT
