怎么从action传值给js

<a href="example.html?param1=value1&param2=value2">Click here</a>

function getQueryParam(param) {
    var urlParams = new URLSearchParams(window.location.search);
    return urlParams.get(param);
}

var param1 = getQueryParam('param1'); // "value1"
var param2 = getQueryParam('param2'); // "value2"

<form id="myForm">
    <input type="hidden" id="hiddenParam" value="someValue">
</form>

var hiddenValue = document.getElementById('hiddenParam').value;

Set-Cookie: name=value; Path=/;

function getCookie(name) {
    var value = "; " + document.cookie;
    var parts = value.split("; " + name + "=");
    if (parts.length == 2) return parts.pop().split(";").shift();
}

var cookieValue = getCookie('name'); // "value"

<script>
    var serverData = {
        param1: "value1",
        param2: "value2"
    };
</script>

console.log(serverData.param1); // "value1"
console.log(serverData.param2); // "value2"

fetch('/api/data')
    .then(response => response.json())
    .then(data => {
        console.log(data.param1); // "value1"
        console.log(data.param2); // "value2"
    });

{
    "param1": "value1",
    "param2": "value2"
}