本文實(shí)例講述了js簡(jiǎn)單實(shí)現(xiàn)調(diào)整網(wǎng)頁字體大小的方法。分享給大家供大家參考，具體如下：
//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','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 ];
}
}
}
使用方法：
<td width="13">
<a href="javascript:tsize('body',0)">
<img src="../image/fsize1of.gif"
name="fsize1" width="18" height="14" id="fsize1"
onMouseOver="MM_swapImage('fsize1','','../image/fsize1on.gif',1)"
onMouseOut="MM_swapImgRestore()"></a>
</td>
希望本文所述對(duì)大家JavaScript程序設(shè)計(jì)有所幫助。