返回百度搜索出来结果中最长的三个标题以及其url

var list = document.getElementsByTagName('h3');
var arr = []
for (var i = 0; i < list.length; i++) {
    var txt = list[i].innerText
    arr.push(txt)
}
for (var j = 0; j < arr.length - 1; j++) {
    for (var i = 0; i < arr.length - 1 - j; i++) { // 0 length-2
        if (arr[i].length > arr[i + 1].length) {
            var temp = arr[i];
            arr[i] = arr[i + 1];
            arr[i + 1] = temp;
        }
    }
}
var arr1 = arr.reverse()
var arr2 = []
for (let i = 0; i < 3; i++) {
    for (let j = 0; j < list.length; j++) {
        if (list[j].innerText == arr1[i])
            arr2.push(j)
    }
}
for (var i = 0; i < arr2.length; i++) {
    console.log(list[arr2[i]].innerText)
    var url = list[arr2[i]].getElementsByTagName('a');
    console.log(url[0].href);
}