js代码翻译器在线翻译例子
以下是一个简单的JavaScript代码翻译器的示例,使用HTML、JavaScript和CSS实现。该代码将用户输入的英文代码翻译成中文,并在浏览器中显示结果。
HTML代码:
<!DOCTYPE html> <html> <head> <title>JavaScript Code Translator</title> <link rel="stylesheet" type="text/css" href="styles.css"> </head> <body> <h1>JavaScript Code Translator</h1> <form> <label for="code">Enter JavaScript code:</label> <textarea id="code" rows="4" cols="50"></textarea> <br> <input type="button" value="Translate" onclick="translateCode()"> </form> <div id="result"></div> <script src="script.js"></script> </body> </html>
JavaScript代码(script.js文件):
function translateCode() { var code = document.getElementById("code").value; var translatedCode = ""; var keywords = ["function", "var", "let", "const", "if", "else", "for", "while", "do", "switch", "case", "break", "continue", "return"]; for (var i = 0; i < code.length; i++) { var char = code.charAt(i); if (char.match(/[a-zA-Z0-9_]/)) { translatedCode += char; } else if (keywords.includes(char)) { translatedCode += char + " "; } else if (char == ";") { translatedCode += "<分号>"; } else if (char == "{") { translatedCode += "<大括号>"; } else if (char == "}") { translatedCode += "<大括号>"; } else if (char == "[") { translatedCode += "<中括号>"; } else if (char == "]") { translatedCode += "<中括号>"; } else if (char == "(") { translatedCode += "<小括号>"; } else if (char == ")") { translatedCode += "<小括号>"; } else { translatedCode += char; } } document.getElementById("result").innerHTML = translatedCode; }
CSS代码(styles.css文件):
body { font-family: Arial, sans-serif; } h1 { text-align: center; } form { margin: 20px; } label { margin-right: 10px; } textarea { width: 400px; height: 100px; font-size: 14px; } input[type="button"] { font-size: 14px; }
以上三段代码整合后,可以实现js代码翻译器在线
<!DOCTYPE html> <html> <head> <title>JavaScript Code Translator</title> <style> body { font-family: Arial, sans-serif; } h1 { text-align: center; } form { margin: 20px; } label { margin-right: 10px; } textarea { width: 400px; height: 100px; font-size: 14px; } input[type="button"] { font-size: 14px; } </style> </head> <body> <h1>JavaScript Code Translator</h1> <form> <label for="code">Enter JavaScript code:</label> <textarea id="code" rows="4" cols="50"></textarea> <br> <input type="button" value="Translate" onclick="translateCode()"> </form> <div id="result"></div> <script> function translateCode() { var code = document.getElementById("code").value; var translatedCode = ""; var keywords = ["function", "var", "let", "const", "if", "else", "for", "while", "do", "switch", "case", "break", "continue", "return"]; for (var i = 0; i < code.length; i++) { var char = code.charAt(i); if (char.match(/[a-zA-Z0-9_]/)) { translatedCode += char; } else if (keywords.includes(char)) { translatedCode += char + " "; } else if (char == ";") { translatedCode += "<分号>"; } else if (char == "{") { translatedCode += "<大括号>"; } else if (char == "}") { translatedCode += "<大括号>"; } else if (char == "[") { translatedCode += "<中括号>"; } else if (char == "]") { translatedCode += "<中括号>"; } else if (char == "(") { translatedCode += "<小括号>"; } else if (char == ")") { translatedCode += "<小括号>"; } else { translatedCode += char; } } document.getElementById("result").innerHTML = translatedCode; } </script> </body> </html>
该代码通过以下步骤实现翻译功能:
1.用户在文本框中输入JavaScript代码。
2.当用户点击“Translate”按钮时,调用translateCode()函数。该函数获取文本框中的代码,并遍历每个字符。如果字符是字母、数字或下划线,则将其添加到translatedCode字符串中。如果字符是JavaScript的关键字,则在添加到translatedCode字符串后添加一个空格。如果字符是分号、大括号、中括号或小括号,则用相应的字符串替换它们。其他字符直接添加到translatedCode字符串中。
3.将translatedCode字符串插入到result div元素中,以便在浏览器中显示翻译结果。