onkeypress character keys are compatible with all browsers usage introduction_javascript skills

Copy code The code is as follows:

document.onkeypress = function( e ){
alert( getCharCode ( e ) );
};
function getCharCode( e ){
var e = e || window.event;
if( typeof e.charCode == "number" ){
return e.charCode;
}else{
return e.keyCode;
};
};