Using Jquery to adjust text size

Question

I'd like to let the user select what font size they would like, and it increases the font size of only #text. Now I tried a few different things but nothing seemed to work. I just want it so the can click up or down arrow and it makes it larger by 1px each time they click. However only a range from 10-80 otherwise it will give an error.

I will post the code below for the html and js. Gonna keep working on it since I got the colors, font family, and bold/italic buttons to work already.

Thank you

HTML/JS

**<select id="font">
    <h2>Font Size</h2>
    <input type="text" name="font" value="15" id="font" /> px
    <br /><span id="sizeWarning"></span>
</select>**



$(document).ready(function() {
  $('#buttonup').click(function(){   
        curSize= parseInt($('#text').css('font-size')) + 2;  if(curSize<=20)
        $('#text').css('font-size', curSize);
        }); 
  $('#buttondown').click(function(){   
        curSize= parseInt($('#text').css('font-size')) - 2;
  if(curSize>=12)
        $('#text').css('font-size', curSize);
        });
 });

Answer 1

Made a simple example (updated, added some checking that font-size only 10-80):

Demo: http://jsfiddle.net/XfHR7/2/

JS:

$("#up").click(function () {
    var currentSize = $("#text").css("font-size");
    currentSize = currentSize.replace(/[^\d.]/g, "");
    currentSize++;
    if(currentSize < 10 || currentSize > 80){
        alert("Font-size between 10 and 80 only!");
    }
    else {
        $("#text").css("font-size", "" + currentSize + "px");
    }
});

$("#down").click(function () {
    var currentSize = $("#text").css("font-size");
    currentSize = currentSize.replace(/[^\d.]/g, "");
    currentSize--;
    if(currentSize < 10 || currentSize > 80){
        alert("Font-size between 10 and 80 only!");
    }
    else {
        $("#text").css("font-size", "" + currentSize + "px");
    }

});

$("input#inputSize").on("keyup change", function () {
    var newSize = $(this).val();
    if(newSize < 10 || newSize > 80){
        alert("Font-size between 10 and 80 only!");
    }
    else {
        $("#text").css("font-size", "" + newSize + "px");
    }
});

HTML:

<p id="text">Text, yay!</p>
<span id="up">Up</span><br />
<span id="down">Down</span><br />
change size via input: <input id="inputSize" type="number" step="1" value="20" max="80" min="10" />