javascript set paragraph point

In web design and development, paragraph points refer to small points inserted in the middle of an article or paragraph. The function of paragraph points is to help readers read the article better. In traditional typography, the setting of paragraph points is usually added manually by the typesetter. But in modern web design, we can use JavaScript to automatically set paragraph points to make the web page more beautiful and readable.

JavaScript is an object-oriented programming language that allows us to add dynamic effects and interactive functions to HTML documents. In this article, we will set segment points via JavaScript. Code examples will be implemented using the jQuery library, a widely used JavaScript library that simplifies programming complexity.

We first need to add a paragraph element to the HTML document:

<p id="my-paragraph">这是一个段落。</p>

Next, we need to write a JavaScript code to add a paragraph point. We can use jQuery's text() method to get the text content of the paragraph, and then use regular expressions to replace spaces with dotted spaces.

$(document).ready(function() {
  var paragraph = $('#my-paragraph');
  var text = paragraph.text();
  var pattern = new RegExp(/s/, "g");
  var result = text.replace(pattern, " · ");
  paragraph.html(result);
});

In the above code, we first use the $(document).ready() method to ensure that the HTML document is loaded before executing the code. Then use jQuery's $() method to select the paragraph element with the id my-paragraph and store it in the variable paragraph.

Next, we use the text() method to get the text content of the paragraph and store it in the variable text.

Then, we use regular expressions to match spaces in paragraphs. s is used here to represent the regular expression of spaces, and g is used to represent global matching. Finally, we use the replace() method of the string to replace each space with a dotted space ·.

The last step is to reset the text with paragraph points into the paragraph element through the html() method.

After running the above code, you can see that each word in the paragraph is separated by dotted spaces. This is the paragraph point effect automatically set by JavaScript.

In actual project development, we can also adjust the size, color, position and other attributes of segment points through CSS styles to achieve richer segment point styles.

To sum up, JavaScript can automatically set paragraph points through regular expressions. You can easily obtain and modify the text content of elements by using the text() and html() methods of the jQuery library. This method can not only reduce the workload of manually adding paragraph points, but also make the web page more beautiful and easier to read. It is a technology worth recommending.

The above is the detailed content of javascript set paragraph point. For more information, please follow other related articles on the PHP Chinese website!