【Web前端问题】async.queue 在kill 之后,无法第二次执行对列,前端妹子刚用async.queue

async.queue 点击事件,kill()执行后,执行async,queue,点击第二次,kill()不执行,也不执行async.queue,怎么回事
就是这个库
图片描述

回答:

代码如下:

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">

<title>爬虫小测试</title>

<meta name="description" content="">

<meta name="keywords" content="">

<script src="./jquery-2.2.1.min.js"></script>

<script src="./async.min.js"></script>

<style>

* {

padding: 0;

margin: 0;

box-sizing: border-box;

}

.container {

width: 500px;

margin: 30px auto;

text-align: center;

}

.result {

border: 1px solid #9E9E9E;

height: 300px;

overflow: auto;

margin-bottom: 30px;

}

.btn {

color: white;

font-weight: 300;

font-size: 16px;

background-color: #7B72E9;

border-color: #7B72E9;

text-decoration: none;

text-align: center;

line-height: 40px;

height: 40px;

padding: 0 40px;

margin: 0;

border-radius: 200px;

display: inline-block;

appearance: none;

cursor: pointer;

border: none;

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

box-sizing: border-box;

-webkit-transition-property: all;

transition-property: all;

-webkit-transition-duration: .3s;

transition-duration: .3s;

}

</style>

</head>

<body>

<div class="container">

<div class="result">

</div>

<div class="btn" id="scratch">

抓取

</div>

</div>

<script>

$(function () {

// create a queue object with concurrency 2

var q = async.queue(function(task, callback) {

console.log('hello ' + task.name);

callback('some thing wrong');

}, 2);

// assign a callback

q.drain = function() {

console.log('all items have been processed');

};

$('#scratch').click(function() {

// add some items to the queue

q.push({name: 'foo'}, function(err) {

if(err) {

console.log(err);

} else {

console.log('finished processing foo');

}

});

q.push({name: 'bar'}, function (err) {

if(err) {

console.log(err);

q.kill();

} else {

console.log('finished processing bar');

}

});

q.push({name: 'meng'}, function (err) {

if(err) {

console.log(err);

} else {

console.log('finished processing meng');

}

});

});

});

</script>

</body>

</html>

回答:

直接给你api。或许你会找到你要的答案,看看kill()做的事情

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