js实现简单点赞操作

JavaScript实现点赞操作:(练手·初级),供大家参考,具体内容如下

前期准备:

① 导入jQuery文件;

② 导入bootstrap文件;

③ 点赞图片;

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>对span标签控制鼠标点击</title>

<script type="text/javascript" src="js/jquery-3.3.1.js" ></script>

<script type="text/javascript" src="js/bootstrap.min.js" ></script>

</head>

<body>

<h5 style="font-family: '微软雅黑';">图片文字并排摆放,文字局域图片腰部</h5>

<!--<span style="font-family: '微软雅黑';color: orangered;font-size: 10px; ">注意:有些浏览器不支持旋转的特性transform:正如你所看到的<br/></span>-->

<span id="goodSpan" onclick="sendGood()">

<img src="img/good.jpg" style="width: 25px; height: 25px;" />

</span>

[<span id="good"></span>]

<span id="badSpan" onclick="sendBad()">

<img src="img/good.jpg" style="width: 25px; height: 25px; transform: rotate(180deg);" />

</span>

[<span id="bad"></span>]

<script>

/*点赞的数量:*/

document.getElementById("good").innerText = "";

var good = document.getElementById("good").textContent;

document.getElementById("bad").innerText = "";

var bad = document.getElementById("bad").textContent;

window.onload = function(){

if (good == "") {

good = 0;

document.getElementById("good").innerText = 0;

}

if (bad == "") {

bad = 0;

document.getElementById("bad").innerText = 0;

}

}

/*点赞的数量:*/

function sendGood(){

good = parseInt(good) + 1;

document.getElementById("good").innerText = good;

document.getElementById("goodSpan").onclick = function(e){

e.preventDefault();

e.stopImmediatePropagation();

}

}

/*踩的数量:*/

function sendBad(){

bad = parseInt(bad) + 1;

document.getElementById("bad").innerText = bad;

document.getElementById("badSpan").onclick = function(e){

e.preventDefault();

e.stopImmediatePropagation();

}

}

</script>

</body>

</html>

结果如下:

下面是点赞图片:可直接拖动图片另存为保存到本地,再使用。

以上是 js实现简单点赞操作 的全部内容, 来源链接: utcz.com/z/336015.html

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