document.getElementsByTagName

document.getElementsByTagName()

<div></div><div></div><div></div> <script>x = document.getElementsByTagName("div"); x[0].style.fontSize = "25px" ; x[0].style.color = "blue" ; x[0].style.fontWeight = "bold" ; var DP = 'x = document.getElementsByTagName("div")<br>'; DP +='x.length = ' + x.length + '<br>' ; DP += 'x[0].style.fontSize = "25px" <br>' ; DP += 'x[0].style.color = "blue" <br>' ; DP += 'x[0].style.fontWeight = "bold"<br>' ; DP += 'x[0].innerHTML= DP' ; x[0].innerHTML = DP; </script>

預覽 還原