js a标签value值

<a href="https://example.com/page?param1=value1&param2=value2">Click me</a>

<a href="#" id="myLink" data-param1="value1" data-param2="value2">Click me</a>

document.getElementById('myLink').addEventListener('click', function(event) {
    event.preventDefault(); // 阻止默认行为
    var param1 = this.getAttribute('data-param1');
    var param2 = this.getAttribute('data-param2');
    console.log(param1, param2);
});

<a href="#" id="myLink">Click me</a>

document.getElementById('myLink').addEventListener('click', function(event) {
    event.preventDefault(); // 阻止默认行为
    var param1 = 'value1';
    var param2 = 'value2';
    console.log(param1, param2);
    // 在这里你可以执行其他操作，比如发送AJAX请求
});

<button id="myButton" data-param1="value1" data-param2="value2">Click me</button>

document.getElementById('myButton').addEventListener('click', function(event) {
    var param1 = this.getAttribute('data-param1');
    var param2 = this.getAttribute('data-param2');
    console.log(param1, param2);
});