数字框

$(document).ready(function() {onlyNum("mobile");});function onlyNum(id){$("#"+id).keydown(function(event){var keyCode = event.which;     if (keyCode == 46 || keyCode == 8 || keyCode == 37     || keyCode == 39 || (keyCode >= 48 && keyCode <= 57)     || (keyCode >= 96 && keyCode <= 105) ){     return true;     }else{    return false;    }}).focus(function(){this.style.imeMode = 'disabled';}); }

设计不能切换输入法的话加样式ime-mode:disabled 就可以了