Javascript NodeJS回调
我花了几个小时玩我的回调,但它拒绝工作尝试“输出到控制台很好,但它总是拒绝输出“回调到这里”。。。。我错过什么了吗 我以前有var output=job.runJob(..),它工作得很好,但我需要添加一些异步jazz来运行作业 jobscheduler.jsJavascript NodeJS回调,javascript,node.js,callback,Javascript,Node.js,Callback,我花了几个小时玩我的回调,但它拒绝工作尝试“输出到控制台很好,但它总是拒绝输出“回调到这里”。。。。我错过什么了吗 我以前有var output=job.runJob(..),它工作得很好,但我需要添加一些异步jazz来运行作业 jobscheduler.js job = require("./job"), console.log('trying'); job.runJob(item.definition,item.vars,item._id, function(callback) {
job = require("./job"),
console.log('trying');
job.runJob(item.definition,item.vars,item._id, function(callback) {
console.log('['+item._id+'] Job output = '+callback);
console.log('callback here');
// Update job nextrun time
var nextrun = new Date();
nextrun.setSeconds(nextrun.getSeconds() + 10);
collection.update({'_id':item._id}, {$set: {nextrun:nextrun}}, {safe:true}, function(err, result) {
if (err) {
console.log('Error updating item: ' + err);
} else {
console.log('['+item._id+'] Job was updated. Next run is '+nextrun);
}
});
});
job.js
var jobdef = require("./jobdef");
module.exports = {
runJob : function(job,vars,jobid){
if (typeof jobdef[job] == 'function') {
var output = jobdef[job](vars,jobid);
return output;
} else {
console.log('['+jobid+'] Job def \'%s\' does not exist. Check jobdef.js for definitions.',job);
}
}
};
jofdef.js
module.exports = {
ping : function(vars,jobid){
return('Were in ping');
},
urlopen : function(vars,jobid){
return('Were in urlopen');
},
findstr : function(vars,jobid){
return('Were in findstr');
}
};
您正在向runjob传递四个参数,但runjob只接受三个参数。请更改runjob的定义,如下所示:
module.exports = {
runJob : function(job, vars, jobid, callback){
if (typeof jobdef[job] == 'function') {
var output = jobdef[job](vars,jobid);
if (typeof callback === 'function')
callback(output);
} else {
console.log('['+jobid+'] Job def \'%s\' does not exist. Check jobdef.js for definitions.',job);
}
}
};