text box input limit number and decimal point or English letter and decimal point JS code

The restriction input program for the contents of a text box. This frame can only enter numbers and decimal points, who help me to change, can only enter lowercase letters and decimal points, and colon, forward and backward slash (:./)

Only digits and decimal points can be entered

The code is as follows	Copy Code
var reg =/^d*.? d{0,2}$/

There are several numbers at the beginning, with 0 or one decimal points in the middle, ending with 0 to 2 digits.

You can only enter lowercase English letters and decimal points, and colons, positive and negative slashes (:./)

The code is as follows	Copy Code
var reg =/[a-z./\:]+/;

A-Z includes lowercase English letters,. is the decimal point,/and \ is the left and right backslash, and finally the colon. The entire composition of a character set and code can be either, and finally in addition to +,1 or more.

Instance

code is as follows	copy code
<input Name= "Vipjia" type= "text" id= "Vipjia" size= "" onkeypress= "return Reginput (this, /^d*.? d{0,2}$/,  String.fromCharCode (Event.keycode)) "  Onpaste =" return Reginput (this,/^d*.? d{0,2}$/,                Window.clipboardData.getData (' Text ')) "ondrop=" Return Reginput (this,/^d*.?) d{0,2}$/,             Event.dataTransfer.getData (' Text ')) "value=" <%=rs1 ("Vipjia")%> "