HTML网页上这么写
<input type="text" style="ime-mode:disabled;" onpaste="return false;" onkeypress="keyPress()" />
function keyPress() {
var keycode = event.keyCode;
if ((keycode >= 48) && (keycode <= 57)) {
event.returnValue = true;
} else {
event.returnValue = false;
}
};
原文：https://www.cnblogs.com/yachao1120/p/10857171.html