This article describes the method of simply adjusting the font size of web pages by JS. Share it for your reference, as follows:
//var tgs = new Array('div','td','tr');var tgs = new Array('td','tr');//Specify spectrum of different font sizes://var szs = new Array('xx-small','x-small','small','medium','large','x-large','x-large','xx-large' );var szs = new Array('10px','12px','14px','16px','18px','20px','22px' );var startSz = 2;function tsize( trgt,inc ) { if (!document.getElementById) { return } var d = document,cEl = null,sz = startSz,i,j,cTags; //sz += inc; sz = inc; if ( sz < 0 ) { sz = 0; } if ( sz > 6 ) { sz = 6; } startSz = sz; if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ]; cEl.style.fontSize = szs[ sz ]; for ( i = 0 ; i < tgs.length ; i++ ) { cTags = cEl.getElementsByTagName( tgs[ i ] ); for ( j = 0 ; j < cTags.length ; j++ ) { cTags[ j ].style.fontSize = szs[ sz ]; } }}How to use:
<td><a href="javascript:tsize('body',0)"><img src="../image/fsize1of.gif"name="fsize1" id="fsize1"onMouseOver="MM_swapImage('fsize1','','../image/fsize1on.gif',1)"onMouseOut="MM_swapImgRestore()"></a></td>For more information about JavaScript related content, please check out the topics of this site: "Summary of JavaScript switching effects and techniques", "Summary of JavaScript search algorithm skills", "Summary of JavaScript animation effects and techniques", "Summary of JavaScript errors and debugging techniques", "Summary of JavaScript data structures and algorithm skills", "Summary of JavaScript traversal algorithms and techniques", and "Summary of JavaScript mathematical operations usage"
I hope this article will be helpful to everyone's JavaScript programming.