Question

我正在尝试从localstorage中获取一系列名称中的随机名称选择器，这似乎是当我使用谷歌浏览器检查时错误不会弹出。

这是我的代码：

function getUserData() {
    var Detail = localStorage.getItem("Detail");

    if (Detail == null) {
        Detail = []; // on new computer, create the local storage item } else { 
        Detail = JSON.parse(Detail); // convert from string to array
    }

    for (var i = 0; i < Detail.length; i++) { // loop through the array
        var row = document.getElementById("Detail").insertRow(-1);
        var cell1 = row.insertCell(0);
        var cell2 = row.insertCell(1);
        var cell3 = row.insertCell(2);
        var cell4 = row.insertCell(3);
        var cell5 = row.insertCell(4);
        cell1.innerHTML = Detail[i].name;
        cell2.innerHTML = Detail[i].admin;
        cell3.innerHTML = Detail[i].email;
        cell4.innerHTML = Detail[i].contact;
        cell5.innerHTML = Detail[i].country;
    }
}

function NamePicker() {
    var Detail = localStorage.getItem("Detail");

    if (Detail == null) {
        Detail = []; // on new computer, create the local storage item
    } else {
        Detail = JSON.parse(Detail); // convert from string to array
    }

    // copy names
    var nameArray = [];

    for (var i = 0; i < Detail.length; i++) { // loop through the array
        nameArray[i] = Detail[i].name;
    }

    for (var i = 0; i < Detail.length; i++) { // loop through the array
        // get a number from random num generator %numArray.length
        name = nameArray[num];

        while (nameArray.length < 11) {
            var randomnumber = Math.max(Math.ceil(Math.random() * 11))
            var found = false;
            for (var i = 0; i < nameArray.length; i++) {
                if (name[i] == randomnumber) {
                    found = true;
                    break
                }
            }
            if (!found) name[nameArray.length] = randomnumber;
        }

        // Display using modal
        alert(name);

        // remove using splice(num, 1);
        name.splice(num, 1);
        document.getElementById("Detail").innerHTML = name;
    }
}

问题是num似乎没有从列表中删除名称，警报功能不会弹出...... 我非常感谢提前帮助感谢...

Answer 1

我在你的第二个功能中发现了一些问题;你在三个for循环中使用局部变量i，我认为在其中一个中你打算使用num。此外，我在第二个for循环中将Detail.length更改为nameArray.length，因为您要通过nameArray。我还将第三个for循环更改为使用z而不是i。

function NamePicker() {
var Detail = localStorage.getItem("Detail");

if (Detail == null) {
    Detail = []; // on new computer, create the local storage item
} else {
    Detail = JSON.parse(Detail); // convert from string to array
}

// copy names
var nameArray = [];

for (var i = 0; i < Detail.length; i++) { // loop through the array
    nameArray[i] = Detail[i].name;
}

for (var num = 0; num < nameArray.length; num++) { // loop through the array
    // get a number from random num generator %numArray.length
    name = nameArray[num];

    while (nameArray.length < 11) {
        var randomnumber = Math.max(Math.ceil(Math.random() * 11))
        var found = false;
        for (var z = 0; z < nameArray.length; z++) {
            if (name[z] == randomnumber) {
                found = true;
                break
            }
        }
        if (!found) name[nameArray.length] = randomnumber;
    }

    // Display using modal
    alert(name);

    // remove using splice(num, 1);
    name.splice(num, 1);
    document.getElementById("Detail").innerHTML = name;
}
}

希望有所帮助！

从localstorage到数组到随机名称选择器的名称

1 个答案: