above is an audio plug-in wavesurfer.js. There is a gray progress bar below. Now click anywhere in the progress bar to create a div (red circle area) at the current location. Click x to delete the div, and drag the two-way arrow to drag back and forth, ...
problem description add a processor to the scss sass file in the webpack configuration file and introduce the global sass variable, but use the variable in the vue template to indicate that the variable does not exist the environmental background of...
it is not wrong to add before each line ...
******vuecheck-version.jsCannot read property node of undefined****** versionRequirement: packageConfig.engines.node ^ TypeError: Cannot read property node of undefined at O...
Project creation is created using: create-react-app charley-react-typescript --scripts-version=react-scripts-ts the project s own configuration does not support sass, pass-through plug-ins or anything introduced. -sharp-sharp-sharp problem descriptio...
1. Requirements: the page first renders a pile of data (old values), then returns changed data (new values) every 3 seconds, and re-renders the corresponding data on the page (the old values will be overwritten by new values). 2. Problem: if the newly r...
how do I control the transparent gradient of the background image (not solid color) from top to bottom? how do you make the following obvious boundary disappear and make the two seem to combine? it doesn t work even if I look it up a lot. ...
for example: setTimeout(function(){ $( .abc ).removeClass( a ); },5000); setTimeout(function(){ $( .abc ).removeClass( b ); },3000); The requirement is that if the second setTimeout is e...
1. Requirements: suppose the page has a hundred li tags with two states, one is hidden (display:none), the other is displayed on the page (display:block); 2. Question: I want to get the quantity hidden and displayed. Can I traverse it directly? 3. A...
Project background: the project uses gulp sass problem requirements: gulp.spritesmith is used to synthesize sprite images; but the problem is: every time a new png; is re-merged, the previous image location information will change; want: each new pictu...
1. Because the page uses a template engine three times, ajax requests data from the same interface three times. 2. Since they all belong to the same interface, I want to request the interface once and cache the data, and then let the template engine get...
package using webpack and sass this @ media attribute is placed in two scss files, but only one of them is valid. How to make @ media valid in both files @media screen and (max-width: 750px) { * body{ background: -sharpf00;} * .footer_div ...
when the drop-down button is clicked, the page will follow the middle code of the drop-down box is: padding: 10px 0; overflow-y: auto; max-height: 413px; ...
body { font-size: 20px; line-height: 2; } .em { font-size: 2em; background: -sharpccc; } how much should the line-height above be in the end? I m not sure: .em inherits the line-height property of body, does it inherit the value of 2...
problem description has taken over an old e-commerce project that has been four or five years old, and the front-end project built by JQ+easy-ui has been iterated all the time. Now it is very difficult to develop the goal is to embed the angular6 fra...
I want to compile and output all the .scss files in the scss directory to the css directory of dist I wrote the parameter: npm run node-sass. scss .scss. dist css .css The structure is not as I expected. All the scss files in the source dire...
there are three elements in the container: there is a div position on the left and right for the absolute, and a problem occurs in the middle of the img width:100%,: html: <section class="display"> <div class="left"&g...
the project encounters the function that needs to modify the theme. V-if can be implemented, but it is very troublesome. Want to know how to change the variables color in scss through vue or js ...
recently created a project using create-react-app, and because of the variety of project themes, multiple style files are required for style definition. The original idea of is to define a css file, which is introduced where you need to use it through...
at first I thought css was simple, but I just wrote some styles now it is found that these attributes influence each other and produce different effects, such as the effect of an attribute, in this case, in that case, it feels a little messy now yo...
< meta charset= "utf-8 " > < meta > < div id= "app " > :{{ message }} <!-- util.getDateTime() --> < div > < script type= "text javascript " > import * as util from @ libs util util getDateTime() var app = new Vue({ el: ...
there is the following code, when the mouse hover, there is a flickering problem, how to solve it? <html> <head> <title>< title> < head> <body> <div class="box"> <div class="ch...
I need to convert a color jpg png map to a monochrome bitmap (not wbmp, in the GD library, but bmp), similar to the windows drawing tool: : : now we need to use php code to implement it. Do you have any ideas? Or ready-made wheels? Ask for advice...
problem description the platform version of the problem and what methods you have tried related codes Please paste the code text below (do not replace the code with pictures) what result do you expect? What is the error message actually s...
Nginx rewrite is currently a secondary directory (including all the following) http: www.abc.cn en . how to redirect to the root directory of another domain name: http: www.abc.com . ...