使用JavaScript对json数组的各种处理方法 filter map forEach..

2019/10/29 | node.js | justchen | 暂无评论 | 216 views

filter方法介绍语法：array.filter(function(currentValue,index,arr), thisValue) 参数用处 function(currentValue,index,arr) 每个元素都回调用该方法 currentValue 必须。当前元素的值 index 可选。当前元素的索引值 arr 可选……

vue学习笔记

2019/10/24 | node.js | justchen | 暂无评论 | 127 views

基本操作 js文件 <script src=”js/vue.js”></script> 就收工了.正式环境用 vue.min.js v-for对json数据的邦定当点击时某个按钮时，更改自已与其他对象的css

<div id="insource" class="col-xs-12">
    <hr>
    <span class="btn btn-app btn-sm btn-pink no-hover" v-for="abc in items">
        <P></P>
        <span class="line-height-1 smaller-90">{{ abc.alias }}</span>
        <p> <span class="line-height-1 smaller-60">{{ abc.id + ":" + abc.type }}</span> </p>
        <p> <span class="line-height-1 smaller-80">{{ abc.group }}</span> </p>
        <span class="badge badge-warning badge-left">电视墙</span>
    </span>
</div>

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<hr>

<P></P>

<span class="line-height-1 smaller-90">{{ abc.alias }}</span>

<p> <span class="line-height-1 smaller-80">{{ abc.group }}</span> </p>

</span>

</div>

[crayon-5fc08fdcaa1……

jQuery 学习笔记一

2019/10/14 | 未分类 | justchen | 暂无评论 | 132 views

基本用法 get数据

function loadXMLDoc_justchen() {
    $.get("/action/led", function (data, status) {      //  GET 参数，回调函数(参数,状态)
        $("#NODE-SN").text(data);   // 查找到ID为NODE-SN的项目并将其更改为文本
        //console.log(data);
    });
}

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function loadXMLDoc_justchen() {

$.get("/action/led", function (data, status) { // GET 参数，回调函数(参数,状态)

$("#NODE-SN").text(data); // 查找到ID为NODE-SN的项目并将其更改为文本

//console.log(data);

});

}

当面页ready 后加载数据

$(document).ready(function () {
    loadXMLDoc_justchen();
});

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$(document).ready(function () {

loadXMLDoc_justchen();

});

定时刷新数据实际上就是加入 setInterval 方法 setInterval() 方法可按照指定的周期（以毫秒计）来调用函数或计算表达式。 setIn……

GoaHead 学习笔记

2019/10/14 | 嵌入式笔记 | justchen | 暂无评论 | 200 views

初始化及基本流程

int goahdStart(void)
{
    char *argp, *auth, *home, *documents, *endpoints, *endpoint, *route, *tok, *lspec;
    int argind, duration;

    route = "route.txt";
    auth = "auth.txt";
    duration = 0;

    logSetPath("stdout:2");  // 打印

    documents = ME_GOAHEAD_DOCUMENTS;

    //initPlatform();
    if (websOpen(documents, route) < 0)
    {
        error("初始化WEB系统失败. Exiting.");
        return -1;
    }
    logHeader();
    if (websLoad(auth) < 0)
    {
        error("Cannot load %s", auth);
        return -1;
    }
    if (websListen("http://*:80") < 0)
    {
        return -1;
    }

    websDefineHandler("test", testHandler, nullptr, nullptr, 0);
    websAddRoute("/test", "test", 0);

    websDefineAction("exampleAction", (void*)exampleAction);

    if (websGetBackground()) {
        if (daemon(0, 0) < 0) {
            error("Cannot run as daemon");
            return -1;
        }
    }

    websServiceEvents(&finished);

    return 0;
}

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int goahdStart(void)

{

char *argp, *auth, *home, *documents, *endpoints, *endpoint, *route, *tok, *lspec;

int argind, duration;

route = "route.txt";

auth = "auth.txt";

duration = 0;

logSetPath("stdout:2"); // 打印

documents = ME_GOAHEAD_DOCUMENTS;

//initPlatform();

if (websOpen(documents, route) < 0)

{

error("初始化WEB系统失败. Exiting.");

return -1;

}

logHeader();

if (websLoad(auth) < 0)

{

error("Cannot load %s", auth);

return -1;

}

if (websListen("http://*:80") < 0)

{

return -1;

}

websDefineHandler("test", testHandler, nullptr, nullptr, 0);

websAddRoute("/test", "test", 0);

websDefineAction("exampleAction", (void*)exampleAction);

if (websGetBackground()) {

if (daemon(0, 0) < 0) {

error("Cannot run as daemon");

return -1;

}

websServiceEvents(&finished);

return 0;

}

goActions goActions定义

static void exampleAction(Webs *wp)
{
    const char *io_val;
    io_val = websGetVar(wp, "val_led", nullptr); // 获取POST过来的数据
    qDebug() << "on_led_set: " << io_val;

    websSetStatus(wp, 200);
    websWriteHeaders(wp, -1, nullptr);
    websWriteEndHeaders(wp);
    websWrite(wp, "%s", "<h4>hello GoAction!</h4>"); // 返回数据
    websDone(wp);
    return nullptr;
/****这句注册一个可以通过action/exampleGetAction访问的GoAction函数****/
websDefineAction("exampleAction", exampleGetAction);

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static void exampleAction(Webs *wp)

{

const char *io_val;

io_val = websGetVar(wp, "val_led", nullptr); // 获取POST过来的数据

qDebug() << "on_led_set: " << io_val;

websSetStatus(wp, 200);

websWriteHeaders(wp, -1, nullptr);

websWriteEndHeaders(wp);

websWrite(wp, "%s", "<h4>hello GoAction!</h4>"); // 返回数据

websDone(wp);

return nullptr;

/****这句注册一个可以通过action/exampleGetAction访问的GoAction函数****/

websDefineAction("exampleAction", exampleGetAction);

esxi 折腾记

2019/10/07 | 未分类 | justchen | 暂无评论 | 185 views

启用VMRC或vmware workstation中的双向粘贴首先需要在客户机中安装vm tools,然后需要在虚拟机中的配置文件中增加两个值属性值 isolation.tools.copy.disable FALSE isolation.tools.paste.disable FALSE 配置的地方如下图所示映射端口到公网只需……

使用fping 来查看整个子网有哪些设备在线

2019/09/30 | 嵌入式笔记 | justchen | 暂无评论 | 202 views

使用就一条指令… fping -g 192.168.1.1/24

密码保护：当代人必须掌握的技能-查看密码为:123456

2019/09/20 | 未分类 | justchen | 暂无评论 | 171 views

无法提供摘要。这是一篇受保护的文章。

Linux内核调试方法总结之sysrq

2019/04/17 | 嵌入式笔记 | justchen | 暂无评论 | 1276 views

sysrq 【用途】 Sysrq被称为”魔术组合键”，是内建于Linux内核的调试工具。只要内核没有完全锁住，不管内核在做什么事情，使用这些组合键都可以搜集包括系统内存使用、CPU任务处理、进程运行状态等系统运行信息。【原理】【内核帮助文档kernel/Documentation/sysrq.txt】首先，内核配置选项中要使能CON……

shell 实现监控程运行并自动重启

2019/03/24 | 嵌入式笔记 | justchen | 暂无评论 | 486 views

使用ps做进程查询

#!/bin/sh
while true
do
    procnum=`ps -ef|grep "testApp"|grep -v grep|wc -l`
    if [ $procnum -eq 0 ]; then
      /root/testApp &
    fi
      sleep 5
done

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#!/bin/sh

while true

do

procnum=`ps -ef|grep "testApp"|grep -v grep|wc -l`

if [ $procnum -eq 0 ]; then

/root/testApp &

fi

sleep 5

done

openwrt webdav安装记录

2019/03/14 | 折腾 | justchen | 暂无评论 | 1235 views

放弃用Lighttpd-mod-webdav的方法,一直不成功

opkg update 
opkg install lighttpd lighttpd-mod-cgi  lighttpd-mod-alias lighttpd-mod-webdav
opkg install php7 php7-cgi --nodeps

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opkg update

opkg install lighttpd lighttpd-mod-cgi lighttpd-mod-alias lighttpd-mod-webdav

opkg install php7 php7-cgi --nodeps

opkg 在安装时如果报依赖错误,加–nodeps 参数可以解决修改 /etc/lighttpd/conf.d/30-cgi.conf

<br />\#######################################################################
##
##  CGI modules
## ---------------
##
## See https://redmine.lighttpd.net/projects/lighttpd/wiki/docs_modcgi
##
server.modules += ( "mod_cgi" )

##
## Plain old CGI handling
##
## For PHP don't forget to set cgi.fix_pathinfo = 1 in the php.ini.
#
cgi.assign                 = ( ".php"  => "/usr/bin/php-cgi",
                               ".pl"  => "/usr/bin/perl",
                               ".cgi" => "/usr/bin/perl",
                               ".rb"  => "/usr/bin/ruby",
                               ".erb" => "/usr/bin/eruby",
                               ".py"  => "/usr/bin/python" )

##
## to get the old cgi-bin behavior of apache
##
## Note: make sure that mod_alias is loaded if you uncomment the
##       next line. (see modules.conf)
##
#alias.url += ( "/cgi-bin" => server_root + "/cgi-bin" )
#$HTTP["url"] =~ "^/cgi-bin" {
#   cgi.assign = ( "" => "" )
#}

##
#######################################################################

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<br />\#######################################################################

##

## CGI modules

## ---------------

##

## See https://redmine.lighttpd.net/projects/lighttpd/wiki/docs_modcgi

##

server.modules += ( "mod_cgi" )

##

## Plain old CGI handling

##

## For PHP don't forget to set cgi.fix_pathinfo = 1 in the php.ini.

#

cgi.assign = ( ".php" => "/usr/bin/php-cgi",

".pl" => "/usr/bin/perl",

".cgi" => "/usr/bin/perl",

".rb" => "/usr/bin/ruby",

".erb" => "/usr/bin/eruby",

".py" => "/usr/bin/python" )

##

## to get the old cgi-bin behavior of apache

##

## Note: make sure that mod_alias is loaded if you uncomment the

## next line. (see modules.conf)

##

#alias.url += ( "/cgi-bin" => server_root + "/cgi-bin" )

#$HTTP["url"] =~ "^/cgi-bin" {

# cgi.assign = ( "" => "" )

#}

##

#######################################################################

修改……

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