blocks|key|2531077|text|将let+obj+=+{number:0};放在函数闭包之外，就像您对let+intervalTimer所做的那样。因为将零添加到回调中，它将增加1，然后将其设置为0。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2531078|entityMap^0|1|L|Z|H|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

<p>Place the <code>let obj = {number:0};</code> outside the function closure, just like you did with the <code>let intervalTimer</code>. Because your adding zero to the callback, its gets incremented by 1,then it gets set back to 0.</p>


blocks|key|2531124|text|在最初的版本中，每次间隔触发时都会重新创建obj，因此它永远不会前进。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2531125|这还将间隔ID返回给调用方，允许根据需求使用多个定时器。|2531126|​|2531127|function+startTimer(callback,+interval)+{

++++let+obj+=+{number:0};

++++const+intervalTimer+=+setInterval(()+=>+{
++++++++if(!callback(obj))+{
++++++++++++clearInterval(intervalTimer)
++++++++}
++++},interval)

++++return+intervalTimer
}

function+callback(obj)+{
++++obj.number%2B%2B
++++console.log(obj.number)
++++return+obj.number+<+5
}

const+timer1+=+startTimer(callback,+500)
const+timer2+=+startTimer(callback,+750)|code-block|syntax|javascript|2531128|2531129|entityMap^0|L|3|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|V|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|W|8|@]|D|@]|E|$M|N]]|$1|O|3|I|5|6|7|X|8|@]|D|@]|E|$]]|$1|P|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|Q|$]]

<p>In the original, <code>obj</code> is being recreated each time the interval fires, hence it never advances.</p>
<p>This also returns the interval ID to the caller, allowing for multiple timers as per the requirement.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>function startTimer(callback, interval) {

    let obj = {number:0};

    const intervalTimer = setInterval(() =&gt; {
        if(!callback(obj)) {
            clearInterval(intervalTimer)
        }
    },interval)

    return intervalTimer
}

function callback(obj) {
    obj.number++
    console.log(obj.number)
    return obj.number &lt; 5
}

const timer1 = startTimer(callback, 500)
const timer2 = startTimer(callback, 750)</code></pre>
</div>
</div>
</p>


blocks|key|3062801|text|下面演示了两个定时器的并发运行。每个计时器回调将根据其counter变量记录一个值。第一个定时器的工作间隔为500毫秒，第二个定时器的工作间隔为1000毫秒。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3062802|请注意逻辑OR运算符(%7C%7C)的使用：|3062803|如果运算符的左边计算为一个真实值，则为|3062804|(即.)，则不评估右侧(定时器取消)。|unordered-list-item|3062805|。|3062806|3062807|如果运算符的左侧计算为假值，则计算右侧(取消)，计时器停止。|3062808|3062809|​|3062810|const+startTimer+=+(callback,+interval+=+1000)+=>+{
++++let+counter+=+1
++++const+tick+=+()+=>+
++++++++(callback(counter%2B%2B)+%7C%7C+clearInterval(intervalId))
++++const+intervalId+=+setInterval(tick,+interval)++++
}

const+countToTen+=+(counter)+=>+{++++
++++console.log(counter)
++++return+counter+<+10
}

const+abcs+=+(counter)+=>+{++++
++++//+65+is+the+start+of+the+Latin+Alphabet
++++console.log(String.fromCharCode(64+%2B+counter))+
++++return+counter+<+10
}

startTimer(countToTen,+500)
startTimer(abcs)|code-block|syntax|javascript|3062811|3062812|entityMap^0|R|7|0|B|2|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|18|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|19|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1A|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]|$1|P|3|Q|5|L|7|1C|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1E|8|@]|D|@]|E|$]]|$1|U|3|V|5|W|7|1F|8|@]|D|@]|E|$X|Y]]|$1|Z|3|T|5|6|7|1G|8|@]|D|@]|E|$]]|$1|10|3|-4|5|6|7|1H|8|@]|D|@]|E|$]]]|11|$]]

<p>The following demonstrates the concurrent running of two timers. Each timer callback will log a value based on its <code>counter</code> variable. The first timer operates on an interval of 500ms, and the second, 1000ms.</p>
<p>Note the use of the logical OR operator (<code>||</code>):</p>
<ul>
<li><p>If the left-hand side of the operator evaluates to a truthy value (ie. we should continue), then the right-hand side (timer cancellation) is not evaluated.</p>
</li>
<li><p>If the left-hand side of the operator evaluates to a falsy value, then the right-hand side (the cancellation) is evaluated, and the timer stops.</p>
</li>
</ul>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const startTimer = (callback, interval = 1000) =&gt; {
    let counter = 1
    const tick = () =&gt; 
        (callback(counter++) || clearInterval(intervalId))
    const intervalId = setInterval(tick, interval)    
}

const countToTen = (counter) =&gt; {    
    console.log(counter)
    return counter &lt; 10
}

const abcs = (counter) =&gt; {    
    // 65 is the start of the Latin Alphabet
    console.log(String.fromCharCode(64 + counter)) 
    return counter &lt; 10
}

startTimer(countToTen, 500)
startTimer(abcs)</code></pre>
</div>
</div>
</p>


<p><a href="https://i.stack.imgur.com/gktqT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gktqT.png" alt="enter image description here" /></a></p>
<p><strong>what i tried</strong></p>
<pre><code>let intervalTimer = null;
function startTimer(callback, interval) {
    // Write the code that goes here
    intervalTimer = setInterval(() =&gt; {
        let obj = {number:0};
        if(callback(obj)) {

        } else {

        }
    },interval);
}
  
function callback(obj) {
obj.number++
console.log(obj.number);
return obj.number &lt; 5;
}
</code></pre>
<p>this is my code so far - but i only manage to get 1. After that the eecution is not continuing.
How can i solve this ?</p>


My interval is not continuing after gets called second time

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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​​我试过什么let intervalTimer = null;function startTimer(callback, interval) {    // Write the code that goes here    intervalTimer = setInterval(() => {        let ...

问我的间隔在第二次被调用后不再继续。
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问我的间隔在第二次被调用后不再继续。EN