📅  最后修改于: 2023-12-03 14:41:23.675000             🧑  作者: Mango
In Javascript, sometimes we need to access DOM elements using their href attribute. The getElementByHref
function helps us find an element in the DOM using its href attribute.
The getElementByHref
function has the following syntax:
document.getElementByHref(href);
Here, href
is the value of the href attribute of the element we want to find.
The getElementByHref
function returns the first element with the specified href value. If no such element is found, it returns null.
Let's consider an example to understand how to use the getElementByHref
function.
Suppose we have the following HTML code:
<a href="https://www.example.com">Example</a>
To find this element using its href attribute, we can use the following Javascript code:
var link = document.getElementByHref("https://www.example.com");
Here, the link
variable will contain the <a>
element with the href attribute value of https://www.example.com
.
We can also use this function to find elements with the same href value in a loop:
var links = document.getElementsByTagName("a");
for(var i=0; i<links.length; i++) {
if(links[i].getAttribute("href") == "https://www.example.com") {
var link = links[i];
// Do something with the link element
}
}
The getElementByHref
function is a useful tool for accessing DOM elements by their href attribute value. It's a handy function to have in your Javascript toolkit!