javascript - 无法解析错误 - 出了什么问题？

Question

这是带有“无法解析错误”的行 -> var label = package.getComment() && package.getComment() : 'N/A'

其余代码... var script = '/home/paulomacedo/jd2/JD_HOME/jdownloader-postprocess.sh'

var path = package.getDownloadFolder() 
var name = package.getName() 
var label = package.getComment() && package.getComment() : 'N/A' 
var links = package.getDownloadLinks() ? package.getDownloadLinks() : []

function isReallyFinished() {
    for (var i = 0; i < links.length; i++) {
        if (links[i].getArchive() != null && links[i].getExtractionStatus() != "SUCCESSFUL" || !package.isFinished()) {
            return false
        }
    }
    return true
}

if (isReallyFinished()) {
    var command = [script, path, name, label, 'PACKAGE_FINISHED']
    log(command)
    log(callSync(command))
}

Answer 1

错误在这里:

var label = package.getComment() && package.getComment() : 'N/A' 
//                                                       ^

您确实想使用 ternary operator :

var label = package.getComment() ? package.getComment() : 'N/A' 

或a && b || c:

var label = package.getComment() && package.getComment() || 'N/A'