js實作div的切換特效上一個下一個_javascript技巧

/下一個 var arr = document.getElementById('tdBjzbsx').getElementsByTagName('div');
for (i = 0; i if ((arr[i].style.display == "block"||arr[i].style.display == "") && i arr[i 1].style.display = "block";
arr[i].style.display = "none";
}
}
}
//上一個div
function top() {
var arr = document.getElementById('tdBjzbsx').getElementsByTagName('div');
for (i = 0; i if ((arr[i].style .display == "block"||arr[i].style.display == "") && i arr[i - 1].style.display = "block";
arr[i].style.display = "none";
break;
}
}
}

tr>

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