用于验证的Java脚本 [英] java script for validation
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问题描述
我如何验证文本框.它只能使用Java脚本使用数字
how can i give validation for text box. it should have only numbers using java script
推荐答案
尝试以下操作:
Try this:
<HTML>
<HEAD>
<SCRIPT language=Javascript>
<!--
function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;
return true;
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<INPUT id="txtChar" onkeypress="return isNumberKey(event)" type="text" name="txtChar">
</BODY>
</HTML>
参考:
仅允许文本框中的数字 [限制对文本框的输入:仅允许数字和小数点 [ ^ ]
Refer:
Allow Only Numbers in a Textbox[^]
Similar discussion: Restricting input to textbox: allowing only numbers and decimal point[^]
在互联网上进行搜索后，我发现了许多链接-
使用Javascript进行数字验证和格式化 [ http://www.dzone.com/snippets/javascript-numeric-validation [ ^ ]
http://www.java2s.com/Code/JavaScript/Form-Control/Validateanumber.htm [ ^ ]
I found a number of links once I did a search on the internet -
Number Validation and Formatting using Javascript[^]
http://www.dzone.com/snippets/javascript-numeric-validation[^]
http://www.java2s.com/Code/JavaScript/Form-Control/Validateanumber.htm[^]
查找此技巧，其中我使用javascript函数仅接受数字值.此功能也只接受一个''.''和+或-号. 如何在DLL [ ^ ]
look this tips in which i use javascript function for only take numeric values. this function also accept only one ''.'' and + or - sign. How to Add and Use Javascript Files''s Functions in DLL[^]
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