禁用ctrl-v（粘贴） [英] disable ctrl-v (paste)
问题描述
我有一个代码可以禁用第二个框上的ctrl-v（粘贴）。问题
是当我输入ctrl-v时，文本显示，然后在我释放ctrl-v后消失
。如何让它不显示在框中。在
VB中，我可以设置keyascii = 0来终止输入。在JavaScript中有没有类似的方式来支付
呢？非常感谢。
< HTML>< head>< / head>< body>
< form name =" myForm" >
密码：< input type =" text">< br>
确认：< input type =" text" name =" myText"
onKeyUp =" fncKeyStop（）;"> < / form>
< script>
function fncKeyStop（）{
if（window.event.ctrlKey）{
if（window.event.keyCode == 86）{
document.myForm.myText.value =""
}
}}
< / script>< / body>< / HTML>
Chris
I have a code to disable ctrl-v (paste) on the 2nd box. The problem
is that when I type ctrl-v, the text shows, then disappear
after I release ctrl-v. How can I make it not to show in the box. In
VB, I can set keyascii=0 to kill the input. Is there a similar way to
do it in JavaScript? Thanks a lot.
<HTML><head></head><body>
<form name="myForm">
Password: <input type="text"><br>
Comfirm: <input type="text" name="myText"
onKeyUp = "fncKeyStop();"> </form>
<script>
function fncKeyStop(){
if (window.event.ctrlKey){
if (window.event.keyCode == 86) {
document.myForm.myText.value = ""
}
}}
</script></body></HTML>
Chris
推荐答案
chirs于2003年11月28日写道：
chirs wrote on 28 Nov 2003:
我有一个代码禁用第二个框上的ctrl-v（粘贴）。
问题是，当我输入ctrl-v时，文本显示，然后
在我释放ctrl-v后消失。如何让它不在框中显示
。在VB中，我可以设置keyascii = 0来终止输入。
在JavaScript中有类似的方法吗？非常感谢。
< HTML>< head>< / head>< body>
< form name =" myForm">
密码： < input type =" text">< br>
确认：< input type =" text"名称= QUOT;&会将myText QUOT;
错字：确认 - >确认
^ ^
onKeyUp =" fncKeyStop（）;"> < / form>
< script>
type属性是必需的。这应该是：
< SCRIPT type =" text / javascript">
function fncKeyStop（）{
if（window。 event.ctrlKey）{
if（window.event.keyCode == 86）{
document.myForm.myText.value =""
您应该使用各自的
集合访问表单和表单元素：
document.forms ['' myForm'']。elements [''myText'']。value ="" ;;
}
}}
< / script>< / body> < / HTML>
I have a code to disable ctrl-v (paste) on the 2nd box. The
problem is that when I type ctrl-v, the text shows, then
disappear after I release ctrl-v. How can I make it not to show
in the box. In VB, I can set keyascii=0 to kill the input. Is
there a similar way to do it in JavaScript? Thanks a lot.
<HTML><head></head><body>
<form name="myForm">
Password: <input type="text"><br>
Comfirm: <input type="text" name="myText"
Typo: Comfirm -> Confirm
^ ^
onKeyUp = "fncKeyStop();"> </form>
<script>
The type attribute is mandatory. This should read:
<SCRIPT type="text/javascript">
function fncKeyStop(){
if (window.event.ctrlKey){
if (window.event.keyCode == 86) {
document.myForm.myText.value = ""
You should access forms and form elements using their respective
collections:
document.forms[''myForm''].elements[''myText''].value = "";
}
}}
</script></body></HTML>
同时使用onkeyup和onkeydown事件。这样，当按下一次键时，它会释放
，当它被释放时（如果保持很长时间
足以让按键重复）。 />
您还应该将功能内容更改为：
函数fncKeyStop（）{
//检查控件是否键被按下了。
//如果Netscape方式不起作用（event.modifiers未定义），
//尝试IE方式（event.ctrlKey）
var ctrl = typeof event.modifiers ==''undefined''？
event.ctrlKey：event.modifiers& Event.CONTROL_MASK;
//检查是否按下''V''键。
//如果Netscape方式不起作用（ event.which undefined），
//尝试IE方式（event.keyCode）
var v = typeof event.which ==''undefined''？
event.keyCode == 86：event.which == 86;
//如果同时按下控件和''V''键时间
if（ctrl&& v）{
// ...丢弃按键并清除文本框
文件。形式[''myForm'']。elements [''myText'']。value ='''';
返回false;
}
返回true;
}
....以及内在事件主体：
< INPUT ... onkeyup =" return fncKeyStop（）"
onkeydown =" return fncKeyStop（）">
这是有效的在Internet Explorer和Opera中。它应该有希望在Mozilla和Netscape中工作，但我无法测试它们。
希望有所帮助，
Mike
-
Michael Winter
M。****** @ blueyonder.co.uk.inva 盖子（删除.invalid以回复）
Use both the onkeyup and onkeydown events. That way, it will fire
when a key is pressed once, and when it''s released (if held long
enough for the keystroke to repeat).
You should also change the function content to:
function fncKeyStop() {
// Check if the control key is pressed.
// If the Netscape way won''t work (event.modifiers is undefined),
// try the IE way (event.ctrlKey)
var ctrl = typeof event.modifiers == ''undefined'' ?
event.ctrlKey : event.modifiers & Event.CONTROL_MASK;
// Check if the ''V'' key is pressed.
// If the Netscape way won''t work (event.which is undefined),
// try the IE way (event.keyCode)
var v = typeof event.which == ''undefined'' ?
event.keyCode == 86 : event.which == 86;
// If the control and ''V'' keys are pressed at the same time
if ( ctrl && v ) {
// ... discard the keystroke and clear the text box
document.forms[''myForm''].elements[''myText''].value = '''';
return false;
}
return true;
}
....and the intrinsic event bodies to:
<INPUT ... onkeyup="return fncKeyStop()"
onkeydown="return fncKeyStop()">
This works in Internet Explorer and Opera. It should hopefully work
in Mozilla and Netscape too, but I can''t test them.
Hope that helps,
Mike
--
Michael Winter
M.******@blueyonder.co.uk.invalid (remove ".invalid" to reply)
在comp.lang.javascript中，chirs写道：
In comp.lang.javascript, chirs wrote:
我有一个代码禁用第二个框上的ctrl-v（粘贴）。
I have a code to disable ctrl-v (paste) on the 2nd box.
据推测，这是为了阻止用户粘贴他们的电子邮件地址，只需键入一次
。如果是这样，我可以说我会对用户感到多么恼火。
-
Nige
请替换YYYY今年
非法入狱暨maximus ludos，vincat
Presumably this is to stop users from pasting their email address having
typed it once. If so, may I say how annoyed I would be as a user.
--
Nige
Please replace YYYY with the current year
ille quis mortem cum maximus ludos, vincat
Michael Winter hu kiteb：
Michael Winter hu kiteb:
type = content-type [p.53] [CI] [p.49]
此属性指定元素的脚本语言？
type = content-type [p.53] [CI] [p.49]
This attribute specifies the scripting language of the element
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