javascript 流星计时器中的 Meteor.setTimeout() 问题？
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Meteor.setTimeout() issue in Meteor Timers?
提问by user3213821
I did a sample example on Meteor.setTimeout()using Meteor. In this example i get an error. I didn't have any idea about this.So please see the below code,error and suggest me how to do?
我做了一个Meteor.setTimeout()使用Meteor. 在这个例子中，我得到一个错误。我对此一无所知。所以请查看下面的代码，错误并建议我怎么做？
Error :
错误 ：
Exception in setTimeout callback: TypeError: undefined is not a function
at _.extend.withValue (http://localhost:3000/packages/meteor.js?8ec262df25783897eaad01255bc8bd1ca4e78b24:773:17)
at http://localhost:3000/packages/meteor.js?8ec262df25783897eaad01255bc8bd1ca4e78b24:358:45
at http://localhost:3000/packages/meteor.js?8ec262df25783897eaad01255bc8bd1ca4e78b24:801:22
JS Code :
JS代码：
if (Meteor.isClient)
{
Meteor.setTimeout(Test("10"), 1000);
Meteor.setInterval(Test1, 1000);
Template.hello.greeting = function ()
{
return "Welcome to timerapp.";
};
Template.hello.events
({
'click input' : function ()
{
// template data, if any, is available in 'this'
if (typeof console !== 'undefined')
console.log("You pressed the button");
//Test();
}
});
}
function Test(x)
{
console.log("*** Test() ***"+x);
}
function Test1()
{
console.log("*** Test1() ***");
}
if (Meteor.isServer)
{
Meteor.startup(function ()
{
// code to run on server at startup
});
}
回答by Tobold
The problem is that setTimeoutexpects a function as a first parameter but you are passing the result of evaluating Test("10")which is "undefined".
问题是setTimeout期望函数作为第一个参数，但您传递的Test("10")是“未定义”的评估结果。
You can solve the issue by wrapping your call to Test1in an anonymous function:
您可以通过将您的调用包装Test1在匿名函数中来解决该问题：
Meteor.setTimeout(function(){Test("10");}, 1000);
