javascript - iOS 8 JavaScript 核心 : Where do you place your JavaScript files at?

Question

如何将 JS 文件添加到主目录，以便“s”不返回“nil”。谢谢。

func analyzeText(text: String) {

    let homeDir = NSHomeDirectory()

    var err: NSError? = NSError()

    let s = String(contentsOfFile: homeDir + "/text.js", encoding: NSUTF8StringEncoding, error: &err)

    println(s)

    var context = JSContext(virtualMachine: JSVirtualMachine())

    context.evaluateScript(s)

    let analyzeText = context.objectForKeyedSubscript("analyzeText")

    let analyzeTextVal = analyzeText.callWithArguments([text])

    println(analyzeTextVal)

}

Answer 1

以下代码适用于我:

func analyzeText(scriptName: String) {
    var ext = scriptName.pathExtension
    var fileName = scriptName.substringToIndex(
        advance(scriptName.startIndex, 
                scriptName.utf16Count - ext.utf16Count - 1))

    if fileExtension.utf16Count == 0 {
        fileName = scriptName
        ext = "js"
    }

    let url = NSBundle.mainBundle()
        .URLForResource(fileName, withExtension: ext)
    let scriptCode = String(contentsOfURL: url!, 
                            encoding: NSUTF8StringEncoding, 
                            error: nil)!

    var context = JSContext(virtualMachine: JSVirtualMachine())
    context.evaluateScript(scriptCode)
    /* ... */
}

要评估名为 text.js 的文件，请执行以下操作:

analyzeText("文本")

确保已将 text.js 添加到 Xcode 项目中，必要时将文件复制到目标位置