特殊字符验证无法按预期工作 [英] Special characters validation not working as expected
问题描述
我正在尝试将正则表达式验证应用于文本框用户控件,它仅在我在文本框中的文本末尾输入内容时才起作用。当我在文本中间某处键入某些内容时,它无效。
例如:嘿,伙计! (当我在文本末尾键入'!'时,我的代码工作正常)嘿!人! (但是当我输入整个文本后,我在文本中间的某处插入'!',不工作)
以下是我的代码。
任何帮助将不胜感激!谢谢!
我尝试了什么:
$( textarea [id $ =<%= TxtValue.ClientID%>])。keyup( function (){
var txt = $( this )。val();
var regex = new RegExp (' [^ 0-9a -zA-Z - ,_。\:\s] + $');
var vldttxt = regex.test(txt );
if (txt.length> 0 && vldttxt === true ){
alert( 错误 );
}
var noSpclChar = txt.replace(正则表达式, 跨度>);
this .value = noSpclChar;
});
( textarea [id
=<%= TxtValue.ClientID%>])。keyup( function (){
var txt =
( this )。val();
var regex = new RegExp (' [^ 0-9a-zA-Z - ,_ \:\s] +
I'm trying to apply Regular Expression Validation to a textbox User Control and it's only working when I enter something at the end of the text in the textbox. And when I type something somewhere in the middle of the text, it's not working.
For Example: Hey Man! (When I type '!' at the end of the text, my Code's working fine) Hey! Man! (But when I insert '!' somewhere in the middle of the text after the entire text is typed, not working)
Below is my Code.
Any help would be greatly appreciated! Thanks!
What I have tried:
$("textarea[id$=<%= TxtValue.ClientID %>]").keyup(function () {
var txt = $(this).val();
var regex = new RegExp('[^0-9a-zA-Z-,_.\:\s]+$');
var vldttxt = regex.test(txt);
if (txt.length > 0 && vldttxt === true) {
alert("Error");
}
var noSpclChar = txt.replace(regex, "");
this.value = noSpclChar;
});
("textarea[id
=<%= TxtValue.ClientID %>]").keyup(function () { var txt =
(this).val(); var regex = new RegExp('[^0-9a-zA-Z-,_.\:\s]+
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