我有一个这样的表格:
<form id="form1" method="post" action="">
<input maxlength="75" size="90" type="text" id="textfield2"/>
</form>
如何在完成输入后显示警告框消息? 感谢
修改
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript" src="jquery.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript">
$(document).ready(function() {
var course_data;
$.get('math.xml', function(data) {
course_data = data;
var that = $('#courses');
$('course', course_data).each(function() {
$('<option>').text($(this).attr('title')).appendTo(that);
});
}, 'xml');
$('#courses').change(function() {
var val = $(this).val();
var that = $('#times').empty();
$('course', course_data).filter(function() {
return val == $(this).attr('title');
})
.find("lesson").each(function() {
$("#lesson").val($(this).text());
});
});
});
</script>
<script type="text/javascript">
function keyPressed(event, input) {
if (event.keyCode == 8) {
return true;
}
var char = event.which ? event.which : event.keyCode;
char = String.fromCharCode(char);
var exerc = ["aaaa aaaa aaaa aaaa","bbbb bbbb bbbb bbbb"];
for (i=0;i<exerc.length;i++){
var option=document.getElementById("courses").selectedIndex;
}
return (exerc[option - 1].charAt(input.value.length) == char);
}
</script>
</head>
<body>
<form name="form1" method="post" action="">
<input type="text" maxlength="70" size="90" id="lesson"/>
</form>
<form name="form2" method="post" action="">
<input maxlength="59" size="90" type="text" onkeypress="return keyPressed(event, this);"/>
</form>
<form name="form1">drop1
<select style="width:100px" id='courses'>
<option selected="selected">choose...</option>
</select>
</form>
</body>
</html>
的xml:
<courses>
<course title="chap 1">
<lesson>aaaa aaaa aaaa aaaa</lesson>
</course>
<course title="chap 2">
<lesson>bbbb bbbb bbbb bbbb</lesson>
</course>
</courses>
我有两个输入字段,我使用按键功能只输入第二个输入中的特定字符。我可以进入,直到第一个字段的字符结束。所以,当我完成输入时,我想出现一条警告信息,如:
alert(ok finish!);
有可能吗?
答案 0 :(得分:2)
使用JQuery,你可以这样做:
$('#textfield2').bind('blur',function() {
alert('I guess i finished typing cause I left the field!?');
});