關於實現獲取span標籤的值加1後賦值給原來的標籤
阿新 • • 發佈：2019-01-30
方法1：js處理
程式碼如下：
方法2：jquery處理<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <script type="text/javascript" src="js/jquery.js" ></script> <title></title> </head> <body> <span id="he" class="a">2</span> <script> var a=document.getElementById("he").innerHTML; var b=(a-0)+1; var c=document.getElementById("he").innerHTML=b; alert(c); </script> </body> </html>
程式碼如下：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <script type="text/javascript" src="js/jquery.js" ></script> <title></title> </head> <body> <span id="he" class="a">2</span> <script> $(function(){ $(function(){ var n=$("#he").text(); n++; $("#he").text(n); alert($("#he").text()); }); // var q=document.getElementsByClassName("a").innerHTML; // alert(q); // var a=document.getElementById("he").innerHTML; // var b=(a-0)+1; // var c=document.getElementById("he").innerHTML=b; // alert(c); }); </script> </body> </html>