js onclick事件 参数

<button onclick="alert('Hello World!')">Click Me</button>

document.getElementById('myButton').onclick = function() {
    alert('Button was clicked!');
};

document.getElementById('myButton').addEventListener('click', function() {
    console.log('Button clicked via addEventListener');
});

function greet(name) {
    alert('Hello, ' + name);
}

document.getElementById('myButton').onclick = function() {
    greet('Alice');
};

function greet(name) {
    alert('Hello, ' + name);
}

var button = document.getElementById('myButton');
button.onclick = greet.bind(null, 'Bob');

<button id="myButton" data-name="Charlie">Click Me</button>

document.getElementById('myButton').onclick = function() {
    var name = this.getAttribute('data-name');
    alert('Hello, ' + name);
};

window.onload = function() {
    document.getElementById('myButton').onclick = function() {
        alert('Button clicked!');
    };
};