JavaScript中的Boolean 方法與Number方法，javascriptboolean
<html><head><script type="text/javascript">//建立 var str = "aaafga"; var str1 = new String("aa"); var str2= String("aaasdrf");//屬性lengthalert(str.length);//方法charAt()alert(str2.charAt(3));//s//方法concat(str1,str2...）alert(str.concat("dfa","55454"));//方法indexOfalert(str.indexOf("a",1));//1// 方法replace（）;alert(str.replace("a","k"));//kaafga//方法 split（）;var st = "1-2-3-5-4-1-2";var v = st.split("-");alert(v.length);//7alert(v[0]);//1//</script></head><body> this is my file </body></html>
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