<textarea name="comments" id="comments" cols="40" rows="4" maxlength="50" onekeypress ="return LessThan(this);"></textarea>
詳細代碼
<script language="javascript">
function LessThan(oTextArea){
//返回文本框字符個數是否符號要求的boolean值
return oTextArea.value.length < oTextArea.getAttribute("maxlength");
}
</script>
<form method="post" name="myForm1" action="addInfo.aspx">
<p><label for="name">請輸入您的姓名:</label>
<input type="text" name="name" id="name" class="txt" value="姓名" maxlength="10"></p>
<p><label for="comments">我要留言:</label><br>
<textarea name="comments" id="comments" cols="40" rows="4" maxlength="50" onkeypress="return LessThan(this);"></textarea></p>
<p><input type="submit" name="btnSubmit" id="btnSubmit" value="Submit" class="btn">
<input type="reset" name="btnReset" id="btnReset" value="Reset" class="btn"></p>
</form>
<script type="text/javascript">
function myFocus() {
this.focus();
}
function mySelect() {
this.select();
}
window.onload = function() {
var oForm = document.forms["myForm1"];
oForm.name.onmouseover = myFocus;
oForm.name.onfocus = mySelect;
}
</script>
<form method="post" name="myForm1" action="addInfo.aspx">
<p>
<label for="name">請輸入您的姓名:</label>
<input type="text" name="name" id="name" class="txt" value="姓名">
</p>
<p>
<label for="passwd">請輸入您的密碼:</label>
<input type="password" name="passwd" id="passwd" class="txt">
</p>
<p>
<input type="submit" name="btnSubmit" id="btnSubmit" value="Submit" class="btn">
<input type="reset" name="btnReset" id="btnReset" value="Reset" class="btn">
</p>
</form>
