Screenshot - Related information

• How does js get the color of a coordinate point on the page?

  recently, I have been trying to take a screenshot of a web page. I have an idea that js can get the color of a coordinate point on the page , similar to the color picker , or the screenshot tool . canvas can get the color of a coordinate in the ar...

  Screenshot html2canvas frontend html5 javascript

  Jul.01,2022
• The release of the version stores the product warehouse of the version, is there any good choice?

  for example, every time the version package is released online, it is hoped that it can be stored in a warehouse and provide a friendly API ....

  CPP

  Mar.25,2021
• The array brought by vue.js from the previous page is compared with the current list array. If the key value is the same, add the color. Click to delete the color.

  question 1: when initializing the page, you need to determine whether the value of the arr2 array is the same as that of the arr array, and if so, add the corresponding background color arr2: []. {key: ,text: }, {key: ,text: }, {key: ,te...

  Vue.js

  Feb.17,2022
• JDBC can connect to the mysql database when testing, but it can't be connected in Tomcat. I don't know why.

  java.sql.SQLException: Unknown character set index for field 255 received from server. at com.mysql.jdbc.Connection.getCharsetNameForIndex(Connection.java:1679) at com.mysql.jdbc.Field.<init>(Field.java:161) at com.mysql.jdbc.MysqlI...

  Java

  Mar.11,2021
• Vue cannot scroll to the bottom of the dialog box using el-scrollbar

  for example, the assignment is as follows: var div = self.$refs[ dialog-wrap ].$refs[ wrap ]; this.$nextTick(() => { div.scrollTop = div.scrollHeight console.log( scrollHeight , div.scrollHeight) console.log( scrollTop , div.scro...

  Vue.js element-ui

  May.22,2021
• How does Mini Program use echarts-for-weixin, to obtain data dynamically? wx,request is asynchronous.

  have you ever done it or not? the official demo is all dead data, and the dynamic acquisition of asynchronous data has not been able to get the value ....

  Mini Program

  Mar.16,2021