[转]惯用验证

from :?http://www.iteye.com/topic/698296

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1. ////----------------Author?Teng-------------??
2. //验证是否为空??
3. function?check_blank(obj,?obj_name){??
4. ??????if(obj.value?!=?''){?????
5. ????????????return?true;?????
6. ?????}else{?????
7. ?????????alert(obj_name?+?"所填不能为空！");???
8. ?????????obj.value?=?"";??
9. ?????????return?false;?????
10. ?????}?????
11. }??
12. ??
13. //过滤输入字符的长度??
14. function?check_str_len(name,obj,maxLength){?????
15. ????obj.value=obj.value.replace(/(^\s*)|(\s*$)/g,?"");??
16. ????var?newvalue?=?obj.value.replace(/[^\x00-\xff]/g,?"**");???
17. ????var?length11?=?newvalue.length;???
18. ????if(length11>maxLength){??
19. ????????alert(name+"的长度不能超过"+maxLength+"个字符！");??
20. ????????obj.value="";??
21. ????????obj.focus();???????
22. ????}???
23. ?}??
24. ??
25. //验证只能为数字??
26. function?checkNumber(obj){??
27. ????var?reg?=?/^[0-9]+$/;??
28. ????if(obj.value!=""&&!reg.test(obj.value)){??
29. ????????alert('只能输入数字！');??
30. ????????obj.value?=?"";??
31. ????????obj.focus();??
32. ????????return?false;??
33. ????}??
34. }??
35. ??
36. //验证数字大小的范围??
37. ??
38. function?check_num_value(obj_name,obj,minvalue,maxvalue){??
39. ????var?reg?=?/^[0-9]+$/;??
40. ????if(obj.value!=""&&!reg.test(obj.value)){??
41. ????????alert(obj_name+'只能输入数字！');??
42. ????????obj.value?=?"";??
43. ????????obj.focus();??
44. ????????return?false;??
45. ????}else?if(minvalue>obj.value||obj.value>maxvalue){??
46. ????????alert(obj_name+"的范围是"+minvalue+"-"+maxvalue+"!");??
47. ????????obj.value="";??
48. ????????obj.focus();??
49. ????????return?false;??
50. ????}??
51. ??
52. }??
53. ??
54. //验证只能是字母和数字??
55. function?checkZmOrNum(zmnum){??
56. ??var?zmnumReg=/^[0-9a-zA-Z]*$/;??
57. ??if(zmnum.value!=""&&!zmnumReg.test(zmnum.value)){??
58. ?????alert("只能输入是字母或者数字,请重新输入");??
59. ?????zmnum.value="";??
60. ?????zmnum.focus();??
61. ?????return?false;??
62. ??}??
63. }??
64. ??
65. //验证双精度数字??
66. function?check_double(obj,obj_name){??
67. ????var?reg?=?/^[0-9]+(\.[0-9]+)?$/;??
68. ????if(obj.value!=""&&!reg.test(obj.value)){??
69. ????????alert(obj_name+'所填必须为有效的双精度数字');??
70. ????????obj.value?=?"";??
71. ????????obj.focus();??
72. ????????return?false;??
73. ????}??
74. }??
75. ?????
76. ??
77. //复选框全选??
78. function?checkboxs_all(obj,cName){??
79. ????var?checkboxs?=?document.getElementsByName(cName);??
80. ????for(var?i=0;i<checkboxs.length;i++){??
81. ????????checkboxs[i].checked?=?obj.checked;??
82. ????}?????
83. }??
84. ??
85. ??
86. //验证邮政编码??
87. function?check_youbian(obj){??
88. ????var?reg=/^\d{6}$/;???
89. ????if(obj.value!=""&&!reg.test(obj.value)){??
90. ????????alert('邮政编码格式输入错误！');??
91. ????????obj.value?=?"";??
92. ????????obj.focus();??
93. ????????return?false;??
94. ????}??
95. }??
96. ??
97. //验证邮箱格式??
98. function?check_email(obj){??
99. ????var?reg?=?/^[a-zA-Z0-9_-]+(\.([a-zA-Z0-9_-])+)*@[a-zA-Z0-9_-]+[.][a-zA-Z0-9_-]+([.][a-zA-Z0-9_-]+)*$/;???
100. ????if(obj.value!=""&&!reg.test(obj.value)){??
101. ????????obj.select();??
102. ????????alert('电子邮箱格式输入错误！');??
103. ????????obj.value?=?"";??
104. ????????obj.focus();??
105. ????????return?false;??
106. ????}??
107. }??
108. ??
109. /*验证固定电话号码?
110. ??0\d{2,3}???代表区号????
111. ??[0\+]\d{2,3}???代表国际区号?
112. ?\d{7,8}?代表7－8位数字(表示电话号码)?
113. ?正确格式：区号-电话号码-分机号(全写|只写电话号码)?
114. */??
115. ??
116. function?check_phone(obj){??
117. ????var?reg=/^(([0\+]\d{2,3}-)?(0\d{2,3})-)?(\d{7,8})(-(\d{3,}))?$/;???
118. ????if(obj.value!=""&&!reg.test(obj.value)){??
119. ????????alert('电话号码格式输入错误！');??
120. ????????obj.value?=?"";??
121. ????????obj.focus();??
122. ????????return?false;??
123. ????}??
124. }??
125. ??
126. //验证手机号码(检验13,15,18开头的手机号！)??
127. function?check_telephone(obj){??
128. ????var?reg=?/^[1][358]\d{9}$/;??
129. ????if(obj.value!=""&&!reg.test(obj.value)){??
130. ????????alert('手机号码格式输入错误！');??
131. ????????obj.value?=?"";??
132. ????????obj.focus();??
133. ????????return?false;??
134. ????}??
135. }??
136. ??
137. //验证是否为中文??
138. function?isChinese(obj,obj_name){??
139. ????var?reg=/^[\u0391-\uFFE5]+$/;???
140. ????if(obj.value!=""&&!reg.test(obj.value)){??
141. ????????alert(obj_name+'必须输入中文！');??
142. font-size: 1em; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 38px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; border-left-width: 1