javascript - change text-font size of whole page content -


is there way in javascript/css can change text size of labels, headings, paragraphs etc on single click , without explicitly getting element's id , changing font size.

what doing right element's id through javascript , change font size explicitly. clear picture of doing check link or check following code

<script type="text/javascript"> function changemysize(myvalue) {     var div = document.getelementbyid("mymain");     div.style.fontsize = myvalue + "px";    } </script>

html code

choose text size: <font size="2"><a href="javascript:void(0);" onclick="changemysize(16);">a</a></font> <font size="4"><a href="javascript:void(0);" onclick="changemysize(20);">a</a></font> <font size="5"><a href="javascript:void(0);" onclick="changemysize(25);">a</a></font> <div id="mymain"> text gets affected </div>

add id body tag , go ahead , change it's font size javascript. change font size every element inside webpage! simple that!


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