<input onkeypress="return (event.keyCode>=48&&event.keyCode<=57)||event.keyCode==46"
onpaste="return !clipboardData.getData('text').match(/\D/)"
ondragenter="return false" style="ime-mode:disabled">
onpaste="return !clipboardData.getData('text').match(/\D/)"
ondragenter="return false" style="ime-mode:disabled">
上边挺多的