Summary of js character type methods for controlling text box input_javascript skills

JS control text box can only input numbers

JS control text box can only input numbers and decimal points

JS control text box can only input English and numbers

JS control text box can only input Chinese

JS control text box can only input Chinese, English and numbers

The JS control text box can only input Chinese, English, numbers, and spaces

The JS control text box can only input Chinese, English, numbers, and decimal points

In summary:

First enter

in ‘’

onkeyup="value=value.replace(/[^X]/g,'')"

Then replace the X in (/[X]/g,'') with the code you want to enter,

Chinese u4E00-u9FA5, numbers 0-9, English a-zA-Z, other symbols @, dot or other symbols.

You can also have more than one, just separate them.

For example: Chinese and English numbers @symbol dot symbol a-zA-Z0-9u4E00-u9FA5@.

If you want to not be able to right-click the pop-up menu in the text box and paste the copied information

Just enter onpaste="return false" oncontextmenu="return false;" in ''