How to implement the article like function with jQuery+ajax

How to implement the article like function with jQuery+ajax_jquery

WBOY

Release： 2016-05-16 15:22:27

Original

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The example in this article describes the method of jQuery+ajax to implement the article like function. Share it with everyone for your reference, the details are as follows:

A few days ago, someone asked me for the like function in the upper right corner of this site. Mai Cong thought about it and decided to share this function. I hope this function will bring convenience to everyone.

The code is very simple, implemented by jQuery+php.

jQuery code:

jQuery(document).ready(function($) {
$(".zan").click(function(e){
var $i=$(".zan i"), $b=$("<b>").text("+1"), n=parseInt($i.text());
$b.css({
"bottom":0,
"z-index":999,
});
$i.text(n+1);
$(".zan").append($b);
$b.animate({"bottom":100,"opacity":0},1000,function(){$b.remove();});
var d = setInterval(function(){
clearInterval(d);
if($(".zan b").length == 1){
$.post("",{zan:$i.text()})
}
},1000)
e.stopPropagation();
});
});

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php code:

<&#63;php
$path = "zan.txt";
if(isset($_POST['zan'])){
$num = (int)$_POST['zan'];
$save = fopen($path,"w");
fwrite($save,$num);
fclose($save);
echo "good";
exit();
$zan = file_exists($path) &#63; intval(file_get_contents($path)) : 0;
}
&#63;>

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html code:

<div class="main">
<div class="zan"><em>看官们给了 <i><&#63;php echo $zan; &#63;></i> 个赞</em></div>
</div>

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With appropriate css style:

.main { position: relative; font-size: 10pt; line-height: 18px; margin: 40px auto; width: 800px; height: 170px; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; -o-user-select: none; user-select: none;}
.zan { position: absolute; top: 20%; left: 45%; width: 160px; height: 110px; background: url("zan.jpg") center no-repeat; cursor: pointer; opacity: 0.85; }
.zan:active { opacity: 1; }
.zan em { position: absolute; color: #333; font-style: normal; bottom: -15px; width: 100%; text-align: center; }
.zan i { font-style: normal; color: #E94F06; }
.zan b { position: absolute; color: #E94F06; font-style: normal; bottom: -15px; width: 100%; text-align: center; }

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That’s it, keep it simple!

Here is the complete code:

<&#63;php
$path = "zan.txt";
if(isset($_POST['zan'])){
$num = (int)$_POST['zan'];
$save = fopen($path,"w");
fwrite($save,$num);
fclose($save);
echo "good";
exit();
}
$zan = file_exists($path) &#63; intval(file_get_contents($path)) : 0;
&#63;>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>我要点赞</title>
<style>
.main { position: relative; font-size: 10pt; line-height: 18px; margin: 40px auto; width: 800px; height: 170px; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; -o-user-select: none; user-select: none;}
.zan { position: absolute; top: 20%; left: 45%; width: 160px; height: 110px; background: url("zan.jpg") center no-repeat; cursor: pointer; opacity: 0.85; }
.zan:active { opacity: 1; }
.zan em { position: absolute; color: #333; font-style: normal; bottom: -15px; width: 100%; text-align: center; }
.zan i { font-style: normal; color: #E94F06; }
.zan b { position: absolute; color: #E94F06; font-style: normal; bottom: -15px; width: 100%; text-align: center; }
</style>
</head>
<body>
<div class="main">
<div class="zan"><em>看官们给了 <i><&#63;php echo $zan; &#63;></i> 个赞</em></div>
</div>
<script src="jquery.min.js"></script>
<script>
jQuery(document).ready(function($) {
$(".zan").click(function(e){
var $i=$(".zan i"), $b=$("<b>").text("+1"), n=parseInt($i.text());
$b.css({
"bottom":0,
"z-index":999,
});
$i.text(n+1);
$(".zan").append($b);
$b.animate({"bottom":100,"opacity":0},1000,function(){$b.remove();});
var d = setInterval(function(){
clearInterval(d);
if($(".zan b").length == 1){
$.post("",{zan:$i.text()})
}
},1000)
e.stopPropagation();
});
});
</script>
</body>
</html>

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The title says there is no limit to likes, so Mai Cong will tell you a little trick:

/* 怒赞 */
jQuery.noConflict();
function zan() {
setInterval(function () {
jQuery(".zan").click();
zan();
}, 600)
}
zan();

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Of course, if you use Accelerate CC (like Mai Cong) and get too many like requests, you will be blocked! Unless you cancel POST in jQuery

I hope this article will be helpful to everyone in jQuery programming.