jQuery 驗證文字框只允許輸入數字及小數點 刪除鍵

        $(document).ready(function() {
            $("#phoneNo").keydown(function(event) {
                var keyCode = event.which;
                if (keyCode == 46 || keyCode == 8 || keyCode == 190 || (keyCode >= 48 && keyCode <= 57) || (keyCode >= 96 && keyCode <= 105) || keyCode == 110) {
                    return true;
                } else { return false }
            }).focus(function() {
                this.style.imeMode = 'disabled';
            });
            $("#input1").keydown(function(event) {
                var keyCode = event.which;
                if (keyCode == 46 || keyCode == 8 || keyCode == 190 || (keyCode >= 48 && keyCode <= 57) || (keyCode >= 96 && keyCode <= 105) || keyCode == 110) {
                    return true;
                } else { return false }
            }).focus(function() {
                this.style.imeMode = 'disabled';
            });
        });