implemented as JavaScript arrays, with deep copying of embedded value types implemented if necessary. All array operations are bounds-checked with panics when the array is accessed outside its range—reads are
To transpile a single Swift file into a JavaScript file: shift.js someSwiftFile.swift To watch a file for changes, running the selected command when a file is updated: shift.js -w someSwiftFile.swift For a full list of commands:
该方法需要传递的参数是Javascript代码。返回值为Javascript代码中的最后一个JSValue。 let consoleLogObject = unsafeBitCast(self.consoleLog, to: AnyObject.self)unsafeBitCast用作强制类型转换,使用的时候需要明确的知道要转换的类型 open func setObject(_ object: Any!, forKeyedSubscript key: (NSCopying & NSOb...
.exceptionHandler闭包赋值。然后我们就正式开始与JS的交互,调用context.evaluateScript()方法执行任何JS代码,返回结果都是JSValue类型,使用toObject()方法转化成Swift对象,当然对象转换是一一对应的(如JS int类型应该转换成Swift Int类型)。我们还可以使用objectForKeyedSubscript()调用下角标函数(OC中我们直接使用[@"属性...
let jsContent = "console.log('Hello, JavaScript!')" let jsFilePath = "/path/to/script.js" do { try jsContent.write(toFile: jsFilePath, atomically: true, encoding: .utf8) print("写入JS文件成功") } catch { print("写入JS文件失败:\(error)") ...
//Swiftprintln("Tripled: \(tripleNum.toInt32())")// Tripled: 30 1. 2. 3. 下标值(Subscripting Values) 通过在JSContext和JSValue实例中使用下标符号可以轻松获取上下文环境中已存在的值。其中,JSContext放入对象和数组的只能是字符串下标,而JSValue则可以是字符串或整数下标。
redirect(toUrl: urlString) } } } } /// 扫码 func goToScanCode() { DispatchQueue.main.async { AppShare.goToGoodsQRCode(source: self.controller) } } } 3、将模型注入到网页中,暴露给JS 注入操作在webViewDidFinishLoad代理方法中。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 func web...
1. Swift 为强类型、静态类型；JavaScript 为弱类型、动态类型，可以实现很多奇（keng）怪（die）的运算...
Swift is a powerful and intuitive programming language for all Apple platforms. It’s easy to get started using Swift, with a concise-yet-expressive syntax and modern features you’ll love. Swift code is safe by design and produces software that runs lightning‑fast....
toRaw() 在如上例子中,原始值的类型是 Int 所以可以只指定第一个原始值。其后的原始值都是按照顺序赋值的。也可以使用字符串或浮点数作为枚举的原始值。 使用toRaw 和 fromRaw 函数可以转换原始值和枚举值。 if let convertedRank = Rank.fromRaw(3) { let threeDescription = convertedRank.simpleDescription...