随机密码生成源码

html
<!DOCTYPE html>

<head>
	<title>随机密码生成</title>
	<meta charset="UTF-8" />
	<script lang="javascript">
		function getNumric() {
			return Math.floor(Math.random() * 10)
		}
		function getUpperLetter() {
			var letterIndexBaseA = Math.floor(Math.random() * (90 - 65 + 1))
			return String.fromCharCode(65 + letterIndexBaseA);
		}
		function getLowerLetter() {
			var letterIndexBasea = Math.floor(Math.random() * (122 - 97 + 1))
			return String.fromCharCode(97 + letterIndexBasea);
		}
		function getAllSpecialChar() {
			switch (Math.floor(Math.random() * 4)) {
				case 0:
					return String.fromCharCode(33 + Math.floor(Math.random() * (47 - 33 + 1)));
				case 1:
					return String.fromCharCode(58 + Math.floor(Math.random() * (64 - 58 + 1)));
				case 2:
					return String.fromCharCode(91 + Math.floor(Math.random() * (96 - 91 + 1)));
				case 3:
					return String.fromCharCode(123 + Math.floor(Math.random() * (126 - 123 + 1)));
			}
		}

		function getInputedSpecialChar() {
			var inputedChars = document.getElementsByName("specialChars")[0].value.trim();
			return inputedChars.charAt(Math.floor(Math.random() * inputedChars.length));
		}

		function generateRandomPassword() {
			var randomString = '';
			var functionArr = [];
			document.getElementsByName("upperCaseTrigger").forEach(ele => {
				if (!ele.checked) {
					return;
				}
				if (ele.value == 0) {
					return;
				}
				functionArr.push(getUpperLetter);

			})
			document.getElementsByName("lowerCaseTrigger").forEach(ele => {
				if (!ele.checked) {
					return;
				}
				if (ele.value == 0) {
					return;
				}
				functionArr.push(getLowerLetter);

			})
			document.getElementsByName("numericTrigger").forEach(ele => {
				if (!ele.checked) {
					return;
				}
				if (ele.value == 0) {
					return;
				}
				functionArr.push(getNumric);

			})
			document.getElementsByName("specialCharTrigger").forEach(ele => {
				if (!ele.checked) {
					return;
				}
				if (ele.value == 0) {
					return;
				}
				if (document.getElementsByName("specialChars")[0].value.trim().length > 0) {
					functionArr.push(getInputedSpecialChar);
				} else {
					functionArr.push(getAllSpecialChar);
				}
			})
			if (functionArr.length == 0) {
				document.getElementById("passwordArea").innerText = "全禁用了拿你生成密码啊？";
				return;
			}
			for (var i = 0; i < document.getElementsByName("pwdLength")[0].value; i++) {
				randomString = randomString + functionArr[Math.floor(Math.random() * functionArr.length)]();
			}
			document.getElementById("passwordArea").innerText = randomString;
		}
	</script>
</head>

<body>
	<span id="passwordArea"></span>
	<br /><br /><br />
	<!-- 密码长度配置  -->
	<label for="pwdLength">密码长度</label>
	<input id="pwdLength" name="pwdLength" type="number" value="16" />
	<br />
	<!-- 是否启用大写字母 -->
	<input checked type="radio" id="enableUpperCase" name="upperCaseTrigger" value="1" />
	<label for="enableUpperCase">启动</label>
	<input type="radio" id="disableUpperCase" name="upperCaseTrigger" value="0" />
	<label for="disableUpperCase">禁用</label>
	大写字母
	<br />
	<!-- 是否启用小写字母 -->
	<input type="radio" checked id="enableLowerCase" name="lowerCaseTrigger" value="1" />
	<label for="enableLowerCase">启动</label>
	<input type="radio" id="disableLowerCase" name="lowerCaseTrigger" value="0" />
	<label for="disableLowerCase">禁用</label>
	小写字母
	<br />
	<!-- 是否启用数字 -->
	<input type="radio" checked id="enableNumeric" name="numericTrigger" value="1" />
	<label for="enableNumeric">启动</label>
	<input type="radio" id="disableNumeric" name="numericTrigger" value="0" />
	<label for="disableNumeric">禁用</label>
	数字
	<br />
	<!-- 是否启用特殊字符 -->
	<input type="radio" checked id="enableSpecialChar" name="specialCharTrigger" value="1" />
	<label for="enableSpecialChar">启动</label>
	<input type="radio" id="disableSpecialChar" name="specialCharTrigger" value="0" />
	<label for="disableSpecialChar">禁用</label>
	<label for="specialChar">特殊字符(启用时，置空则使用所有特殊字符)</label>
	<input id="specialChars" name="specialChars" type="text" />
	<br />
	<button onclick="generateRandomPassword()">生成密码</button>
</body>

</html>
随机密码生成源码 ​

随机密码生成源码
