1. Why use redux
1. React is just a js library for building user interfaces
2. For calling parent-child components, you can only pass values level by level through the way shown on the lef
Tag: Implementation
Use Flex layout to achieve width adaptive
1. Fixed on both sides, adaptive in the middle
.box{ width: 100%; display: flex; height: 300px; } .left{ < div> width: 100px; height: 200px; background-color:red; } .right{
Implement AJAX requests with dojo: XHR, cross-domain, and other
Easily implement Ajax requests on any browser is the original intention of every Ajax framework. Dojo undoubtedly provides very rich support in this regard. In addition to XMLHttpRequest, dynamic s
Dojo small example (33) dojo.request.script Implement cross-domain through JSONP
dojo/request/script implements cross-domain request data through JSONP, and requires back-end cooperation to return Javascript code:
require([“dojo/request /script”, “dojo/json”],function(scr
CSS implements the fork
css tick .tick {position: relative; display: inline-block; width: 40px; height: 40px; border- radius: 20px; background: gray;}.tick:before, .tick:after {background: white; position: absolute; conte
Third, use FFMPEG + NGINX + RTMP under Windows to build a live stream, draw
One. Environment 1. Development environment: windows
2. Development tools: FFmpeg, nginx, nginx-rmtp-module
(Link: https://pan.baidu.com/s/119d2GeMzddas_wEsBdeInw Extraction code: lxmp)
Shell Programming: Use scripts to achieve NGINX’s guardianship restart
nginx_daemon.sh #!/bin/bash
#
this_pid=$$
while true
do
ps -ef | grep nginx | grep -v grep | grep -v $ this_pid &> /dev/null
if [$? -eq 0 ];then
echo ” nginx is ok”
sleep 3
else
Shell script does not use Data functions to implement a date query
The shell script realizes the query N days before or N days after the specified date 1 1 span> #!/bin/bash
2 func(){
3 read -p “Please enter the year, month and day (format: 2019-01-01): ”
Conversion of recursive functions to asynchronous CPS implementation (JavaScript)
This is my function.
function duplicate_step_through_highlighted (element_jq, target_jq, char_cb) {
console. log( element_jq);
var contents = element_jq.contents();
for (var i = 0; i }
}
One way command to achieve a CPU usage 100%
for i in `seq 1 $(cat /proc/cpuinfo |grep “physical id” |wc -l)`; do dd if=/dev/zero of=/dev/null & done
Description:
cat /proc/cpuinfo |grep “physical id” | wc- l The number of CPUs ca