如何获取javascript中某些标签的元素值？

// HTML
<div id="myDiv">Hello World</div>

// JavaScript
var element = document.getElementById("myDiv");
console.log(element.innerText); // 输出: Hello World

// HTML
<div class="myClass">Hello</div>
<div class="myClass">World</div>

// JavaScript
var elements = document.getElementsByClassName("myClass");
for (var i = 0; i < elements.length; i++) {
    console.log(elements[i].innerText); // 输出: Hello, World
}

// HTML
<p>Hello</p>
<p>World</p>

// JavaScript
var elements = document.getElementsByTagName("p");
for (var i = 0; i < elements.length; i++) {
    console.log(elements[i].innerText); // 输出: Hello, World
}

// HTML
<div class="myClass">Hello World</div>

// JavaScript
var element = document.querySelector(".myClass");
console.log(element.innerText); // 输出: Hello World

// HTML
<div class="myClass">Hello</div>
<div class="myClass">World</div>

// JavaScript
var elements = document.querySelectorAll(".myClass");
elements.forEach(function(element) {
    console.log(element.innerText); // 输出: Hello, World
});

window.onload = function() {
    var element = document.getElementById("myDiv");
    console.log(element.innerText);
};

document.getElementById("myDiv").addEventListener("DOMNodeInserted", function(event) {
    if (event.target === this) {
        console.log(this.innerText);
    }
});