喜悦国际村 » XML/HTML/CSS/Js » JavaScript:放大及縮小字體

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kind.huang2004-12-5 10:07 AM
JavaScript:放大及縮小字體

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=big5">
<script language="JavaScript" type="text/javascript">
var curfontsize=10;
var curlineheight=18;
function fontZoomA(){
  if(curfontsize>8){
    document.getElementById('fontzoom').style.fontSize=(--curfontsize)+'pt';
    document.getElementById('fontzoom').style.lineHeight=(--curlineheight)+'pt';
  }
}
function fontZoomB(){
  if(curfontsize<64){
    document.getElementById('fontzoom').style.fontSize=(++curfontsize)+'pt';
    document.getElementById('fontzoom').style.lineHeight=(++curlineheight)+'pt';
  }
}
</script>
</head>

<body>
<a href="javascript:fontZoomA();" class="top_UserLogin">放大字體</a>
<br>
<a href="javascript:fontZoomB();" class="top_UserLogin">縮小字體</a>
<p id="fontzoom">此處的字體可以放大縮小</p>
<p>此處的字體不會放大縮小</p>
</body>
</html>


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