习题打字js
日期：2014-05-16 浏览次数：20319 次
练习打字js
一个练习打字程序，不兼容firefox，原因是自动获得焦点和截获键盘事件不兼容。
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<html>
<head>
<title> 打字练习 </title>
<script>
var timer_handle;
var started=0;
function creatword()
{
var random_word=["A","B","C","D","E","F","G","H","I","J","K","L","M","N",
"O","P","Q","R","S","T","U","V","W","X","Z"];
var index=Math.floor(Math.random()*26);
document.word.fallword.value=" "+random_word[index]+" ";
}
function fallgo()
{
var height=0;
height=document.word.fallword.style.top.slice(0,-2);
height=height-1+21;
if(height>=680)
{
alert("you loose!");
clearInterval(timer_handle);
started=0;
document.word.fallword.style.top="30px";
document.word.fallword.value="ready";
}
else
{
document.word.fallword.style.top=height+"px";
}
}
function shot()
{
if(event.keyCode==13)
{
event.keyCode=9;
if(" "+document.word.inputword.value.toUpperCase()+" "==document.word.fallword.value)
{
document.word.fallword.style.top="30px";
creatword();
document.word.inputword.value="";
}
}
}
function startfall()
{
if(started==0)
{
timer_handle=setInterval("fallgo();",500);
creatword();
started=1;
}
}
function fff()
{
document.word.inputword.focus();
}
</script>
</head>
<body>
<form name="word">
<input type="text" name="inputword" style="position:absolute;left:550px;top:700px" onkeydown="shot()" onblur="fff();">
<input type="button" name="fallword" value="ready" style="position:absolute;left:550px;top:30px"/>
<input type="button" name="start" value=" 开始 " style="position:absolute;left:600px;top:750px" onclick="startfall();"/>
</form>
</body>
</html>
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