[英]how to count the number of time of the text that has been entered in a textbox in jsp?
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Connection Unsuccessful</title>
</head>
<body>
<div class="container">
<label for="uname"><font size="4" color="black"><b>Connection Name</b></font></label>
<input type="text" placeholder="Connection Name" name="cname" required>
</div>
</body>
</html>
如何使用java计算在文本框中输入的连接名称的次数?
是否要计算输入到输入中的文本字符数? 还是要计算用户尝试进入连接的次数? 我甚至为 keyup 和 blur 添加了监听器来计算输入长度以及每次用户离开输入时:
var conName = document.getElementById("conName"); var keyStrokeCnt = 0; var inputCnt = 0; var keyStrokeRes = document.getElementById("keyStrokeResult"); var inputRes = document.getElementById("inputResult"); function start() { conName.addEventListener("keyup", function() { keyStrokeCnt = conName.value.length; keyStrokeRes.innerHTML = "Number of keystrokes entered: " + keyStrokeCnt; }); // conName.addEventListener("blur", function() { inputCnt++; inputRes.innerHTML = "Number of times input: " + inputCnt; }); }; window.onload = start();
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Connection Unsuccessful</title> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous"> </head> <body> <div class="container"> <label for="uname"><font size="4" color="black"><b>Connection Name</b></font></label> <input type="text" id="conName" placeholder="Connection Name" name="cname" required> </div> <div id="keyStrokeResult"></div> <div id="inputResult"></div> </body> </html>
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