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- Reference css in html
- The methods for html to reference css include inline styles, internal style sheets and external style sheets. Detailed introduction: 1. Inline styles are written directly inside HTML elements and defined through the style attribute. This method is suitable for style definition of a single element. It is not recommended for widespread use in large projects because it will make the HTML code confusing. , difficult to maintain; 2. The internal style sheet is placed in the "<head>" tag of the HTML document and defined using the "<style>" tag. This method is suitable for style definition of a single HTML file, etc.
- Front-end Q&A 1606 2023-11-01 10:11:35
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- What are the gradient properties in css3
- Gradient attributes in CSS3 include linear-gradient, radial-gradient, conic-gradient, repeating-linear-gradient, repeating-radial-gradient, etc. Detailed introduction: 1. Linear-gradient, linear gradient, can gradient along a straight line. You can specify the starting point and end point of the gradient, as well as the position and color of each color stop point, etc.
- Front-end Q&A 1497 2023-11-01 09:49:22
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- What are the ways to clear floats in css
- The ways to clear floats in CSS include clear attribute, overflow attribute, clearfix class, clearfix class of parent element, pseudo-element to clear float, overflow attribute of parent element, and combination of clear attribute and BFC. Detailed introduction: 1. Use the clear attribute, a simple and commonly used method to clear floats. By adding an empty block-level element after the floating element and setting the clear attribute for it, you can clear the previous floating effect and make it The elements below are laid out normally and so on.
- Front-end Q&A 2856 2023-10-30 11:57:51
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- What are the ways to hide elements?
- Methods to hide elements include using the display attribute, visibility attribute, opacity attribute, position attribute, clip attribute of CSS, and using the style attribute and classList attribute of JavaScript. Detailed introduction: 1. The display attribute of CSS can be used to control the display mode of elements, including multiple values such as none, block, inline, inline-block, etc.
- Front-end Q&A 957 2023-10-30 11:36:08
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- What are the advantages of closure functions?
- The advantages of closure functions include encapsulation and hiding implementation details, data protection and security, state retention and sharing, delayed calculation and lazy evaluation, passing and returning values as parameters, implementing decorators and functional programming, and reducing global variables Use, improve code readability and maintainability, etc. Detailed introduction: 1. Encapsulation and hiding implementation details. The closure function has good encapsulation. It can bind a group of related variables and functions together to form a closed environment. The variables defined inside the closure function and functions are invisible to the outside, etc.
- Front-end Q&A 1600 2023-10-30 11:27:42
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- Where cookies are stored
- A cookie is a small piece of text information sent by the server to the browser in an HTTP response. The browser will store this information on the user's computer, specifically on the client or in the HTTP request. Detailed introduction: 1. Client, Cookie is stored on the client. The specific storage location depends on different browsers. In common browsers, Cookie can be stored in text files, databases and memory; 2. HTTP request , in each HTTP request, the browser will automatically compare it with the current domain name and so on.
- Front-end Q&A 2884 2023-10-27 16:54:56
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- What are the characteristics of closures?
- The characteristics of closures include context encapsulation, state persistence, dynamism, function currying, encapsulation and abstraction, resource control, performance improvement, simulation of object-oriented programming, callback functions and event processing, modularization, etc. Detailed introduction: 1. Context encapsulation, a closure can encapsulate the context in which it is created, which means that the closure can access and operate the variables and functions declared in the context when the closure is created; 2. State persistence Sex, because the closure can retain the context when it was created, it can also remember and access the previous state; 3. Dynamicity, etc.
- Front-end Q&A 1562 2023-10-27 16:41:22
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- What is front-end display
- Front-end display is a property of CSS that controls how elements are displayed. The display attribute can set the display type of the element and determine how the element is laid out and presented on the page. Common values for the display attribute include block, inline, inline-block, none, flex, grid, etc. By setting the display attribute, you can flexibly control the display mode of elements, which can improve the readability, maintainability and scalability of the page, and provide users with a better user experience.
- Front-end Q&A 2227 2023-10-27 16:33:05
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- How to reduce the occurrence of closures
- Methods to reduce the generation of closures include avoiding unnecessary closures, controlling the return value of closures, using weak references, reducing unnecessary global variables, rational use of loops and recursions, using event proxies, writing unit tests, following design principles and Use tools for code analysis and more. Detailed introduction: 1. Avoid unnecessary closures. In many cases, closures are not necessary. You can use module mode to implement private variables and avoid using closures; 2. Control the return value of closures. When using closures When doing so, you should try to control the return value of the closure, if the closure returns a basic data type, etc.
- Front-end Q&A 1291 2023-10-27 16:28:13
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- What are the ways to show hidden elements?
- Methods of showing hidden elements include using CSS styles, using CSS style transparency, and using CSS style position. Detailed introduction: 1. Using CSS styles is a common way to display and hide web page elements. You can use the display attribute to control the display and hiding of elements; 2. Use CSS style transparency. The opacity attribute of CSS styles can change the transparency of elements. , thereby achieving the effect of hiding and displaying elements; 3. Using CSS style position, the position attribute of CSS style can control elements, etc.
- Front-end Q&A 850 2023-10-27 16:22:54
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- What are the ways to clear floats?
- Ways to clear floats include using the clear attribute, using the overflow attribute, using BFC, using flex layout, using grid layout, and using pseudo elements to clear floats. Detailed introduction: 1. Use the clear attribute. This is the most common way to clear floating elements. Add an element after the floating element and set the clear attribute for it to prevent it from floating together with the previous floating element. There are four clear attributes. Values: left, right, both and none; 2. Use overflow, etc.
- Front-end Q&A 8269 2023-10-27 16:13:15
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- What are the ways to hide elements on a web page?
- Methods for hiding elements on web pages include display attributes, visibility attributes, opacity attributes, position attributes, z-index attributes, and overflow attributes. Detailed introduction: 1. The display attribute can control the display mode of elements, including showing and hiding. Common display attribute values are none, block, inline and inline-block; 2. The visibility attribute can control the visibility of elements, etc.
- Front-end Q&A 1373 2023-10-27 16:06:39
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- What are the new features of css3
- The new features of CSS3 include selectors, box models, colors, backgrounds, borders and shadows, text effects, layout and fluid layout, multi-column layout, animations and transitions, responsive design, etc. Detailed introduction: 1. Selectors, attribute selectors, pseudo-class selectors, pseudo-element selectors and multiple selectors; 2. Box model, the Box-sizing property changes the default CSS box model to make it easier to layout; 3. Color, CSS3 adds support for transparency, use rgba(), hsla() or opacity to set it, etc.
- Front-end Q&A 4589 2023-10-27 15:52:35
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- What are the descendant selectors in css?
- The CSS descendant selectors include: 1. The descendant selector separated by a space will select all descendant elements of all elements that match the parent element, and can set styles for all descendant elements; 2. The descendant selector separated by a > sign will select all descendant elements that match the parent element. The direct descendant elements of the element that the element matches can set styles for the direct descendant elements; 3. The pseudo-element descendant selector will select all descendant elements of the element that matches the parent element, including pseudo elements, and can set styles for the pseudo-element descendant elements. etc.
- Front-end Q&A 1549 2023-10-26 17:06:47
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- Which languages do w3c standards apply to?
- The w3c standard is used in HTML, CSS, JavaScript, XML, SVG, WebAssembly and other languages. Detailed description: 1. HTML, a standard language used to create web pages; 2. CSS, a standard language used to control the style of web pages; 3. JavaScript, a scripting language used to add interactivity and animation effects; 4. XML, used to A standard language for exchanging data; 5. SVG, a standard language for creating vector graphics, etc.
- Front-end Q&A 618 2023-10-26 16:59:28
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