點選按鈕觸發js獲取標籤裡的內容並修改
阿新 • • 發佈：2019-01-29
<html> <head> <script type="text/javascript"> function textModify() { var obj = document.getElementById("p"); alert(obj.innerHTML); obj.innerHTML= "google coding"; } function textModify2() { var obj = document.getElementById("p2"); alert(obj.innerText); obj.innerText= "knowledge"; } </script> </head> <body> <form> <input type="button" value="btn" onClick="textModify()"> <input type="button" value="btn2" onClick="textModify2()"> </form> <p id="p">life</p> <p id="p2">mastery of knowledge</p> </body>