📄 s10_01.htm
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<META name="GENERATOR" content="Microsoft FrontPage 5.0">
<META name="ProgId" content="FrontPage.Editor.Document">
<TITLE>跳动的文字</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=gb2312">
</HEAD>
<BODY onload="WaveText(0)">
<SCRIPT language="JavaScript">
function GetFontSize(i,textLength)
{//按正弦曲线求字符的字体大小
return Math.floor(72 * Math.abs(Math.sin(i/textLength *3.14)));
}
function ShowLikeWave(text,wave_start)
{//通过把文本text中的每个字符显示为不同大小,使其外形象波浪
var i,size,output="";
for (i = 0; i < text.length; i++)
{
size = GetFontSize(i + wave_start,text.length);
output += "<font style='font-size: "+ size +"pt'>" + text.substring(i,i+1)+ "</font>";
}
theWavedText.innerHTML = output;
}
function WaveText(wave_start)
{// 以wave_start为起点,波浪式显示文本
var theText = "JavaScript";
ShowLikeWave(theText,wave_start);
if (wave_start > theText.length) wave_start=0;
setTimeout("WaveText(" + (wave_start+1) + ")", 50);
}
</SCRIPT>
<DIV ID="theWavedText" align="center">
</DIV>
</BODY>
</HTML>
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