Javascript restricted text box can only be an integer or decimal number _ javascript skills

How to use JavaScript to restrict text box input and only allow the input of integers or floating-point numbers with a decimal digit. This article shares a code example, if you have a need, refer to form verification. Do you have to enter only numbers in a certain input box? Only integer numbers or decimal numbers are allowed. The following code may help you! By defining the onkeypress, onkeyup, and onblur events in the current input box, the results are still very reliable.

The Code is as follows:

The following is a brief explanation of the onkeypress, onkeyup, and onblur events.

The onkeypress event occurs when the keyboard key is pressed and a key is released.

The onkeyup event occurs when the keyboard button is released.

The onblur event occurs when the object loses focus.

In addition, if you need to strictly verify the form, you must perform dual verification on the client and the server. The above is tightly verified on the client. If you have a little understanding of the program, you can easily bypass this verification code. If the server side does not perform verification, it is very easy to have problems.

The above is all the content of this article. I hope you will like it.