JS简单实现点赞操作
JavaScript实现点赞操作:(练手·初级)
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。