Javascript - 未捕获的语法错误 : Unexpected identifier

Question

我在尝试让它工作时遇到了令人沮丧的时间，Chrome 一直显示未捕获的语法错误，但作为 javascript 的初学者，我不知道去哪里找。任何帮助或指示将不胜感激

function details(user) {
    var fuel = prompt("Would you prefer petrol or diesel?");
    var passengers = prompt("How many passengers will there be?");
    var aircon = prompt("Do you require air-conditioning?");
    var transmission = prompt("Do you want a Manual, Semi-Automatic or Automatic Transmission?");
    var hire = prompt("How long would you like to hire a vehicle for? (Day Hire, Weekend Hire or Weekly Hire)");

    if (fuel == "petrol" && passengers == "2" && aircon = "yes" && transmission == "semi-automatic") {
        result = "Lambourghini Aventador";
    } else {
        result = "some form of SUV"
    }

    if result = "Lambourghini Aventador") {
        if (hire == "Day hire") {
            cost = 2000;
        }
        if (hire == "Weekend hire") {
            cost = 3800;
        }
        if (hire == "Weekly hire") {
            cost = 12000;
        }
    }
}

Answer 1

这里有几个问题。
您应该使用 JSLint这是一个非常好的 JavaScript 质量保证工具。这将验证您的 JavaScript 并指出任何明显的问题。

第一的:

aircon = "yes"

应该

aircon == "yes"

其次:

if result = "Lambourghini Aventador")

应该

if (result == "Lambourghini Aventador")

第三

result = "some form of SUV"

应该

result = "some form of SUV";

第四

避免使用 == ，而是使用 JavaScript 标准 ===
阅读原因 here in this very good Stackoverflow post !