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我需要把一個文本名稱爲document.form變量,把代碼,我會盡力解釋更好把這個名字的textarea的
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html class="no-js" lang="en">
<head>
<meta name="description" content="" />
<meta charset='iso-8859-1'>
<script type="text/javascript">
function initializeVar(option1,option2,number){
var v = document.forms['variables'];
var txtAreas = document.getElementsByTagName("textarea");
var txtareaname = txtAreas[0].name
if(option1.checked)
{
for (var i=0;i<number.value;i++)
v.id.value = 'N' + v.id.value;
}
}
</script>
<title>Test</title>
</head>
<body>
<a href="index.html">Test</a></div>
<ul>
<li><a href="check.html">Test</a></li>
<li><a href="help.html">Help</a></li>
<li><a href="#">About</a></li>
</ul>
<form action="createtxt.php" method="post" enctype ="multipart/form-data" name="variables">
<p>Enter sequence:
<input type="checkbox" name="option1" value="n"> N
<input type="checkbox" name="option2" value="a"> A
<input name="number" type="number" placeholder="write a number" />
<button type="button" onclick=initializeVar(this,option1,option2,number)>Create it!</button>
<textarea id="id" name="id" rows="7" cols="60"></textarea>
<p>Enter sequence: </p>
<input type="checkbox" name="option1" value="n"> N
<input type="checkbox" name="option2" value="a"> A
<input name="number" type="number" placeholder="write a number" />
<button type="button" onclick=initializeVar(this,option1,option2,number)>Create it!</button>
<textarea id="srna" name="srna" rows="7" cols="60"></textarea>
<p><input type="submit" value="Check form">
<input type="reset" value="Delete all"></p>
</form>
</body>
</html>
我想做,v.txtareaname.value而不是v.id.value,因爲我想對某些textareas使用相同的函數,而不是每個textarea都執行一個函數。我希望你能理解我。
我改變了我的第一個問題,我希望現在你可以幫助我,而且更明白理解 – user3191692