create-modify-element - Shorten code samples

This commit is contained in:
2020-10-15 22:43:26 +05:30
parent b2838159cc
commit 4d7a23c1c7
+11 -10
View File
@@ -16,10 +16,10 @@ import Accordion from "../components/Accordion"
This method returns the **first element that matches the CSS selector**. If no match is found, it returns `null`.
```js
var ele = document.querySelector(selector);
document.querySelector(selector);
// Ex. - body > div.container > div.box + div.box
document.querySelector(".box"); // returns first div.box
// Ex. - body > div.container > div.box
document.querySelector(".box"); // returns div.box
document.querySelector(".not-found"); // null
```
@@ -51,9 +51,9 @@ Here, the NodeList is static - meaning any changes in the DOM later does not aff
:::
```js
var paragraphs = document.querySelectorAll("p");
var paras = document.querySelectorAll("p");
for (var p of paragraphs) {
for (var p of paras) {
p.className = "note";
}
```
@@ -69,7 +69,7 @@ The `document.createElement` method creates a new HTML element, taking the tag n
To set attributes and add the element to DOM, look at `.setAttribute` and `.appendChild` below.
```js
var newEle = document.createElement("div") // creates <div/>
document.createElement("div") // creates <div/>
```
<Accordion title="Related">
@@ -78,10 +78,10 @@ var newEle = document.createElement("div") // creates <div/>
`createTextNode` method takes a string as input and returns a new TextNode.
```js
var newEle = document.createElement("div")
var ele = document.createElement("div")
var newText = document.createTextNode("Hello world")
newEle.appendChild(newText) // <div>Hello world</div>
ele.appendChild(newText) // <div>Hello world</div>
```
</Admonition>
</Accordion>
@@ -96,9 +96,10 @@ Every element has a `.setAttribute(name, value)` method, which can add/modify a
`value` - value of the attribute. Ex- `"text"`.
```js
var newInput = document.createElement("input")
var ele = document.createElement("input")
newInput.setAttribute("type", "text") // <input type="text"/>
ele.setAttribute("type", "text")
// creates - <input type="text"/>
```
[Read on MDN](https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute)