Js/Jquery limit text box input method

$(function(){    
    /*JQuery restricts the text box to only enter numbers*/ 
    $(".NumDecValue").keyup(function(){   
            $(this).val($(this).val().replace( /[^\d]/g,''));
        }).bind("paste",function(){ //CTR+V event handling   
            $(this).val($(this).val(). replace(/[^\d]/g,''));    
        }).css("ime-mode", "disabled"); //CSS sets the input method to be unavailable   

    /*JQuery restricts the text box to only enter numbers and decimal point */ 
    $(".NumDecText").keyup(function(){   
            $(this).val($(this).val().replace(/[^0-9.]/g,'') );   
        }).bind("paste",function(){ //CTR+V event processing   
            $(this).val($(this).val().replace(/[^0-9.]/g ,''));    
        }).css("   ime-mode", "disabled"); //CSS setting input method unavailable

    /*JQuery restricts the text box to only enter numbers and 2 decimal places*/ 
        $(". NumDecTextTwo ").keyup(function(){   
                $(this).val((this.value.match(/\d+(\ .\d{0,2})?/)||[''])[0]);   
            }).bind("paste",function(){ //CTR+V event handling   
                $(this).val ((this.value.match(/\d+(\.\d{0,2})?/)||[''])[0]);    
            }).css("ime-mode", "disabled "); //CSS set input method unavailable           
});
Example of usage:

<input type="text" name="expenses" id="expenses" class=" NumDecTextTwo " placeholder="accurate to 2 decimal places" />

Follow-up supplement. . . .