<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>獲取所有 type為checkbox的元素</title> </head> <body> <form action=""> <input type="text"> <input type="checkbox"> <input type="button" name="" value="按鈕"> <input type="checkbox" name=""> <input type="checkbox" > <input type="radio" name=""> </form> </body> <script type="text/javascript"> var inputs=document.getElementsByTagName("input"); //獲取所有的input標簽對象 var checkboxArray=[]; //初始化空數組，用來存放checkbox對象 for(var i=0;i<inputs.length;i++){ var obj=inputs[i]; if(obj.type=='checkbox'){ checkboxArray.push(obj); obj.checked=true; } } </script> </html>