js浏览器刷新页面 ajax应用开发典型实例|AJAX应用之草稿自动保存(11)

40 }

41

42 }

43 else{

44 alert("你所请求的页面发生异常，可能会影响你浏览该页的信息！");

45 alert(http.status);

46 }

47 }

48 }

49

50 function chkUser(){

51 var url = "/chkUserAndCom";

52 var name = document.getElementById("userName").value;

53 url += ("&userName="+name+"&oprate=chkUser");

54 http.open("GET",url,true);

55 http.onreadystatechange = handleHttpResponse;

56 http.send(null);

57 return ;

58 }

59 function chkComNm(){

60 var url = "/chkUserAndCom";

61 var name = document.getElementById("comNm").value;

62 url += ("&comName="+name+"&oprate=chkCom");

63 http.open("GET",url,true);

64 http.onreadystatechange = handleHttpResponse1;

65 http.send(null);

66 return ;

67 }

68

69 //该函数可以创建我们需要的XMLHttpRequest对象

70 function getHTTPObject(){

71 var xmlhttp = false;

72 if(window.XMLHttpRequest){

73 xmlhttp = new XMLHttpRequest();

74 if(xmlhttp.overrideMimeType){

75 xmlhttp.overrideMimeType('text/xml');

76 }

77 }

78 else{

79 try{

80 xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

81 }catch(e){

82 try{

83 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

84 }catch(E){

85 xmlhttp = false;

86 }

87 }

88 }

89 return xmlhttp;

90 }

91/**//**Ajax 结束*/

92

93//检测表单

94function chkpassword()

95{

96 var m=document.form1;

97 if(len(m.password.value) ＞ 20 || len(m.password.value) ＜ 5 || !isStr(m.password.value))

98 {

99 document.getElementById("passwordStr").style.display = "";

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