abstract：<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xml
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="js/jquery-3.4.0.min.js" type="text/javascript"></script>
</head>
<body>
<script type="text/javascript">
$(document).ready(function() {
$(":enabled").css("background","red");
$(":disabled").css("background","blue");
$(":selected").css("color","red");
$(":checked").parent().css("color","blue");
});
</script>
<form>
输入框1<input type="text" name =""/><br/>
输入框2<input type="text" name =""/><br/>
输入框3<input type="text" name ="" disabled="disabled"/><br/>
输入框4<input type="text" name =""/><br/>
<select >
<option>1</option>
<option>2</option>
<option selected="selected">3</option>
<option>4</option>
</select>
<br />
<label>
<input type="checkbox" name = "" />我的
</label>
<label>
<input type="checkbox" name = "" checked="checked"/>你的
</label>
<label>
<input type="checkbox" name = "" />他的
</label>
</form>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-04-18 09:59:00
Teacher's summary：完成的不错。jq比js简单很多，多练习。继续加油