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1. Special symbols Sharp horn < left horn > right horn Space: &Nbsp: the space occupies the width [font] and has a strong influence &Emsp: the width occupied is exactly one Chinese width, and it is basically not affected by the font Version: & copy Trademark: & Trade & reg 2.div and span labels div: it has no specif ...

[study notes] Introduction to Java Web - HTML 📒 Blog home page:* Tiejia Xiaobao* 📒 🌞 Purpose: HTML - Introduction 🌞 🙏 Bloggers are also in the learning stage. If you find any problems, please let us know. Thank you very much 🙏 💗 At the same time, thank you very much for your support 💗 🌈 Starting is always the most meaningfu ...

This article is translated from http://doc.norang.ca/org-mode.html, originally written by Bernt Hansen. Because the original text is long, it will be published in multiple articles. Please mark the source for reprint. This chapter mainly introduces org Publish export function, org-mode Although it is in text mode, it provides powerful publis ...

1, Get form             1. Document getelementbyid ("ID attribute value"); Get the form object through the id attribute value of the from tag             2. document. name attribute value of the form; Get the form object through ...

Solution of adding explicit watermark to web pages at the front endIn order to prevent information leakage and protect copyright, we often use watermark in the front end.Of course, watermark can also be divided into bright watermark and dark watermark. Today, we will realize the bright watermark and full screen coverage at the front end.To crea ...

CSS style sheet 1, Overview 1. What is CSS? Cascading style sheets, customizing the display style of html elements and beautifying the page are very important for the construction of front-end pages 2. Why use CSS (1) CSS refers to cascading style sheets (2) Styles define how HTML elements are displayed (3) Styles are usually stored in sty ...

Semantic What is semantics Each HTML element has a specific meaning a element: hyperlink p element: paragraph h1 element: first level title All elements have nothing to do with the display effect The effect of elements displayed in the page should be determined by CSS. Because browsers have default CSS styles, each element has some de ...

Responsive layout When I write the project, I use the responsive layout to find the information, harvest and Bug The following articles quoted by other authors. If there is infringement, please contact to delete it! doubt Why can't 1rem be 1px The minimum font size set by the current browser is 12px, so the browser automatically recognizes ...

1. Form Using front-end js to verify the form can reduce a lot of unnecessary trouble and improve user satisfaction. Otherwise, as soon as you submit data, you will go directly to the back-end server and find that you didn't fill in the name after a series of verification, which will waste a lot of time. 1.1. Obtain form    &n ...

Tell me about your understanding of closures Closures are mainly used to design private methods and variables. The advantage of closures is that they can avoid the pollution of global variables. The disadvantage is that closures will reside in memory and increase memory usage. Improper use can easily lead to memory leakage. Closures have thre ...