js圖片切換程式碼
阿新 • • 發佈:2019-01-29
</pre><pre name="code" class="html"><body> <img id="obj" src="img/2.jpg"/> <script> var a = document.getElementById("obj") var arr = new Array(); arr[0]="http://127.0.0.1:8020/HelloHBuilder/img/2.jpg"; arr[1]="http://127.0.0.1:8020/HelloHBuilder/img/3.jpg"; arr[2]="http://127.0.0.1:8020/HelloHBuilder/img/HBuilder.png"; var currindex=0;//剛開始把標記位定義在函式change裡面了,導致每次只顯示前兩張,每次呼叫change()都會被初始化為0. function change(){ if(currindex==arr.length-1) currindex=0; else currindex++; a.src=arr[currindex]; } setInterval(change,2000) </script> </body>