1 //屏蔽右键菜单
2 document.oncontextmenu = function (event) {
3 if (window.event) {
4 event = window.event;
5 } try {
6 var the = event.srcElement;
7 if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
8 return false;
9 }
10 return true;
11 } catch (e) {
12 return false;
13 }
14 }
15
16 //屏蔽粘贴
17 document.onpaste = function (event) {
18 if (window.event) {
19 event = window.event;
20 } try {
21 var the = event.srcElement;
22 if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
23 return false;
24 }
25 return true;
26 } catch (e) {
27 return false;
28 }
29 }
30
31 //屏蔽复制
32 document.oncopy = function (event) {
33 if (window.event) {
34 event = window.event;
35 } try {
36 var the = event.srcElement;
37 if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
38 return false;
39 }
40 return true;
41 } catch (e) {
42 return false;
43 }
44 }
45
46 //屏蔽剪切
47 document.oncut = function (event) {
48 if (window.event) {
49 event = window.event;
50 } try {
51 var the = event.srcElement;
52 if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
53 return false;
54 }
55 return true;
56 } catch (e) {
57 return false;
58 }
59 }
60
61 //屏蔽选中
62 document.onselectstart = function (event) {
63 if (window.event) {
64 event = window.event;
65 } try {
66 var the = event.srcElement;
67 if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")) {
68 return false;
69 }
70 return true;
71 } catch (e) {
72 return false;
73 }
74 }
