js携带json对象跳转

let data = { name: "John", age: 30 };
let jsonString = encodeURIComponent(JSON.stringify(data));
window.location.href = "targetPage.html?data=" + jsonString;

// 存储
let data = { name: "John", age: 30 };
localStorage.setItem("data", JSON.stringify(data));
window.location.href = "targetPage.html";

// 读取
let data = JSON.parse(localStorage.getItem("data"));

// 存储
let data = { name: "John", age: 30 };
document.cookie = "data=" + encodeURIComponent(JSON.stringify(data)) + "; path=/";

// 读取
let cookies = document.cookie.split(';').map(cookie => cookie.trim());
for (let cookie of cookies) {
    if (cookie.startsWith("data=")) {
        let data = JSON.parse(decodeURIComponent(cookie.substring(5)));
    }
}

// 表单提交示例
let form = document.createElement('form');
form.method = 'POST';
form.action = 'targetPage.php';

let input = document.createElement('input');
input.type = 'hidden';
input.name = 'data';
input.value = JSON.stringify({ name: "John", age: 30 });

form.appendChild(input);
document.body.appendChild(form);
form.submit();