提供'XX'必须返回一个值从$得到AngularJs工厂方法 [英] Provider 'xx' must return a value from $get factory method in AngularJs

问题描述

我写了 angularjs 工厂如下

module.factory('LogService', function () {

    function log(msg) {
        console.log("Rahkaran:" + new Date() + "::" + msg);
    }

    return 
    {
        log: log
    };

});

但我一直收到此错误

But I kept getting this error

提供商LogService必须返回一个值从$拿到工厂方法

我GOOGLE有关错误，我无法找到任何解决办法。

I googled about the error and I couldn't find any solution.

无独有偶，我改变了收益语句来此

Coincidentally I changed the return statement to this

return{
    log: log
};

和错误消失了！

有有之间的差异 {在返回前或下一行？

Is there any differences between having { in front of return or at the next line?

推荐答案

这就是所谓的自动插入分号

return语句被自动分号插入（ASI）的影响。没有行终止; 允许return关键字和前pression之间

The return statement is affected by automatic semicolon insertion (ASI). There is no line terminator ; between the return keyword and the expression allowed.

return
a + b;

// is transformed by ASI into

return; 
a + b;

所以，你必须插入 {的回报面前和不下一行。

的参考：的
的的https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/return

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