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First, attach the realization effect, the histogram of the segmented Thanks to the company's designer's problem, otherwise I won't go to make trouble with it The chart type is pictoriaBar, which is available after echarts version 3.4 (the version is not clear) The specific uses of this property are described below: barWidth: set the wid ...

1. What is Promise Promise is the mainstream solution of JS asynchronous programming, which follows promise / A +. 2. Brief analysis of promise principle (1) promise itself is a state machine with three states pending fulfilled rejected When a project object is initialized, its state is pending. When resolve is called, the project sta ...

introduce Original linkThanks comehope Big man's [front end daily battle] Effect preview github.io browse Source code address https://github.com/shanyuhai1... Code interpretation 1. First, complete the html structure <figure class="container"> <section class="stars"></section> <section class="fires"></section&g ...

background Compared with JPEG image, PNG image is a lossless image storage format, and there is an additional transparency channel, so in general, PNG image is larger than JPEG image, and PNG image is often the big head of APK image resources, so optimizing the size of PNG image is more rewarding for reducing the volume of packet. wiki about P ...

1. Global variable special module It means that a module (js or vue) is used to manage this set of global variables. The variables in the module are exposed by export (the best export format is object, which is convenient to call in other places). When other places need to use it, import the module with import Global variable specific module G ...

Effect preview Online demo Press the "click preview" button on the right to preview on the current page, and click the link to preview in full screen. https://codepen.io/comehope/pen/YLRLaM Interactive video tutorial This video is interactive. You can pause the video at any time and edit the code in the video. Please use chrome, safa ...

04-HK custom city selection list This article is hkzf The series of mobile tutorials aims to help beginners quickly master the project development based on React technology stack through a series of articles. requirement analysis The custom city list is divided into two parts. The left side is divided into three parts: current location, hot ci ...

Project construction: 1. The front end uses the Vue cli framework to realize page display 2. Middleware web service uses C ා to realize the connection between front-end and back-end database 3. Use stored procedures to put all businesses here, Project practice I. environment configuration 1. Install Vue cli globally and use it all the tim ...

Effect preview Online demo Press the "click preview" button on the right to preview on the current page, and click the link to preview in full screen. https://codepen.io/comehope/pen/wjZoGV Interactive video tutorial This video is interactive. You can pause the video at any time and edit the code in the video. Please use chrome, safa ...

Effect preview Online demo Press the "click preview" button on the right to preview on the current page, and click the link to preview in full screen. https://codepen.io/comehope/pen/RyvgMZ Interactive video tutorial This video is interactive. You can pause the video at any time and edit the code in the video. Please use chrome, safa ...