[英]Chaining methods in Javascript
I want to chain methods in Javascript (using Node.js). 我想在Javascript中链接方法(使用Node.js)。
However, I encountered this error: 但是,我遇到此错误:
var User = {
'deletes': function() {
console.log('deletes');
return this;
},
'file': function(filename) {
console.log('files');
}
};
User.deletes.file();
node.js:50
throw e; // process.nextTick error, or 'error' event on first tick
^
TypeError: Object function () {
console.log('deletes');
return User;
} has no method 'file'
at Object.<anonymous> (/tests/isolation.js:11:14)
at Module._compile (node.js:348:23)
at Object..js (node.js:356:12)
at Module.load (node.js:279:25)
at Array.<anonymous> (node.js:370:24)
at EventEmitter._tickCallback (node.js:42:22)
at node.js:616:9
How could I make it work? 我该如何运作?
You are not invoking the deletes
function (the string representation of the function is what is printed in the error trace). 您没有在调用 deletes
函数(该函数的字符串表示形式是错误跟踪中打印的内容)。
Try: 尝试:
User.deletes().file()
Happy coding. 快乐的编码。
One thing is missing: User.deletes().file(<filename>)
. 缺少一件事: User.deletes().file(<filename>)
。 I'm not sure, maybe this raise an error? 我不确定,也许这会引发错误?
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.