up a named parameter function bar( someObj) { console. log( someObj) } / / Call the function and pass an object literal:. You can' t pass an object in that way, because when you concatenate the HTML string of your span element, all the operands of the + operator are converted toString, including the event object, that' s why you get " [ object. The reason message isn' t being set is that Error is a function that returns a new Error object and does not manipulate this in. instanceof Error: true instanceof NotImplemented: true message: I was too busy / private/ tmp/ t. js: 24 throw new. io data is serialized as JSON, which can only represent plain objects. You will need to serialize any errors into a recognizable plain- object format, or let Socket. IO' s standard serialization do its thing ( which will result in. Custom formatter should be correct HTML fragment. Thus you have to encode the rowObject as string ( using JSON.
stringify, for example) and escape the quotes of the string inside of the custom formatter. Error オブジェクトは、 ユーザー定義の例外の基底オブジェクトとして使用することもでき ます。 標準の組み込みエラー型. JavaScript には、 一般的な Error コンストラクタの他 に、 中核となる 6 つのエラーコンストラクターがあります。 クライアント側の例外. fileName: このエラーを起こしたファイルへのパス。. Since the magic arguments object is an array like object, we can just pass it to apply( ). Don' t be afraid to look inside jQuery' s code when you have a doubt, it' s all in clear and well documented Javascript. What you can do, is simply create an instance of Error and assign custom properties to it, like this: var error = new Error( " There is an error in the response from the service" ) ; error. error = err; error. The first Error object would actually work, because it is expecting a string value, in this case ' sample'. The second would not because you are trying to pass an object in, and it is expecting a string. The error object would have. Another way to make it work is to declare your param as a variable. { { var param = { " x" : it. foo} ; } } { { # def. snippet: param} }.