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Martin Hope
userStack
Asked: 2020-05-11 20:16:45 +0800 CST
  • 1

I need to scan the entire DOM of any page, is it possible?

I'm trying but I can't get absolutely everything, I only get a part

function findhead1() {
  var all = document.body.getElementsByTagName('*');

  for (var i = 0, max = all.length; i < max; i++) {
    console.log(all[i]);
  }
}
<body onload="findhead1()">
  <div class="postcell post-layout--right">

    <div class="post-text" itemprop="text">

      <p>I labeled some pixels of a picture as foreground and the rest of them are unlabeled yet. I want to use SVM and the labeled pixels's properties like color as SVM input to label the remaining pixels as background or foreground. Is that possible with
        one-class as input? Or do I need some pixels labeled as background (two-class input)?
        <br>Thanks in advance.<br> Edit: I found <br>
        <a href="http://scikit-learn.org/stable/auto_examples/svm/plot_oneclass.html" rel="nofollow">http://scikit-learn.org/stable/auto_examples/svm/plot_oneclass.html</a> <br> and <br>
        <a href="http://www.csie.ntu.edu.tw/~cjlin/libsvm/" rel="nofollow">http://www.csie.ntu.edu.tw/~cjlin/libsvm/</a> <br> For one-class SVM, but I dont know how to use it in matlab.</p>
    </div>

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              <a href="/posts/34400186/revisions" title="show all edits to this post">edited <span title="2015-12-22 14:04:27Z" class="relativetime">Dec 22 '15 at 14:04</span></a>
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              asked <span title="2015-12-21 16:25:47Z" class="relativetime">Dec 21 '15 at 16:25</span>
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              <a href="/users/3365425/majid-r">Majid.r</a><span class="d-none" itemprop="name">Majid.r</span>
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</body>

javascript
Martin Hope
userStack
Asked: 2020-03-03 07:23:03 +0800 CST
  • 0

I want to put lines in the middle of the squares (in the spaces between the squares)

.cell { 
  border-right: 1px solid #000000; 
  border-bottom: 1px solid #000000; 
  float: left; 
  margin:10px;
  width: 100px; 
  height: 100px;  
  font-weight: 400;
  background: #8a97a0;
  color: #FFF;
}
.row { 
  clear: both; 
  overflow: hidden; 
}
.table { 
  border-left: 1px solid #000000; 
  border-top: 1px solid #000000; 
}
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<div class="table">
    <div class="row">
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
    </div>
    <div class="row">
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
    </div>
    <div class="row">
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
        <div class="cell">&nbsp;</div>
    </div>
    
</div>

css3
Martin Hope
userStack
Asked: 2020-02-04 15:40:19 +0800 CST
  • 0

For each modification in spring I do the following:

mvn clean package

that instruction takes 1 min (which is a lot)

then I run the jar that was packed in the target folder

java -jar nombreDelJar.jar

Do I have to execute these instructions every time I make changes? Is there no other way that is faster?

spring
Martin Hope
userStack
Asked: 2020-01-27 07:56:45 +0800 CST
  • 0

Something strange happens, very strange, the sequence does not end completely, why? this is my code.

First the connection to the bd.

var mysql = require('mysql');
var cnxMysql = function () {

    return mysql.createConnection({
        host: 'localhost',
        user: 'root',
        password: '123',
        database: 'key'
    });
}

exports.cnxMysql = cnxMysql;

The following code I am trying to perform the query.

let objBD = require('../model/cnxMysql').cnxMysql();

for (let i = 0; i < parameters.length; i++) {
   for(let x=0; x<Object.entries(parameters[i]).length; x++){
   let post;

   post = {ID_INTENTO: result, TIPO: Object.entries(parameters[i])[x][0], VALOR: Object.entries(parameters[i])[x][1]};
   console.log('111111111111', post);


   objBD.query('INSERT INTO  PARAMETROS SET ?', post, function (err, rows) {
   console.log('22222222222');

           });
           }
    }

The first console is executed first, but it does not enter the second, this is the order of execution.

111111111111 { ID_INTENTO: 197, TIPO: 'error', VALOR: 0.9 }
111111111111 { ID_INTENTO: 197, TIPO: 'lr', VALOR: 0.1 }
111111111111 { ID_INTENTO: 197, TIPO: 'error', VALOR: 0.5 }
111111111111 { ID_INTENTO: 197, TIPO: 'lr', VALOR: 0.1 }
111111111111 { ID_INTENTO: 197, TIPO: 'error', VALOR: 0.1 }
22222222222 
22222222222 
22222222222 
22222222222 
22222222222

The ideal sequence would be:

111111111111 { ID_INTENTO: 197, TIPO: 'error', VALOR: 0.9 }
22222222222 
    111111111111 { ID_INTENTO: 197, TIPO: 'lr', VALOR: 0.1 }
22222222222 
    111111111111 { ID_INTENTO: 197, TIPO: 'error', VALOR: 0.5 }
22222222222 
    111111111111 { ID_INTENTO: 197, TIPO: 'lr', VALOR: 0.1 }
22222222222 
    111111111111 { ID_INTENTO: 197, TIPO: 'error', VALOR: 0.1 }
22222222222

I also modified my code with async await

for (let i = 0; i < parameters.length; i++) {
       for(let x=0; x<Object.entries(parameters[i]).length; x++){
       let post;

       post = {ID_INTENTO: result, TIPO: Object.entries(parameters[i])[x][0], VALOR: Object.entries(parameters[i])[x][1]};
       console.log('111111111111', post);


           await  setParameters(post);
               }
        }

async function setParameters(post) {
    objBD.query('INSERT INTO  PARAMETROS SET ?', post, function (err, rows) {
        console.log('22222222222', rows);
    });
}

But, the result is the same.

mysql
Martin Hope
userStack
Asked: 2020-01-06 15:43:03 +0800 CST
  • 0

Execute a function every millisecond

window.onload = function() {
  main();

  function main() {
    int = setInterval('dibujar()', 100);
  }


  function dibujar() {
    console.log('dibujando');
  }
}

The script above produces an error and I think it's because of the .onload function, I need window.onload = function() {}it because if I don't use it I get null objects from the html. If I don't use it, it works fine (I REPEAT: I need to use the function window.onload = function() {}):

main();

      function main() {
        int = setInterval('dibujar()', 100);
      }


      function dibujar() {
        console.log('dibujando');
      }

javascript
Martin Hope
userStack
Asked: 2020-12-13 13:55:10 +0800 CST
  • 4

I want to parse the date like this (day: month: year "spaced" hour: minute: second)

I did the test with 2018-12-10T10:33:57-04:00and it returns me 12/10/2018 10:12:00 that result is wrong, I need10/12/2018 10:33:57

let fecha = '2018-12-10T10:33:57-04:00'
console.log(moment(fecha).format('MM/DD/YYYY  HH:MM:SS'));
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.15.1/moment.min.js"></script>

another example with another date, the minute is always 12

let fecha2='2018-12-12T18:09:17-04:00';
console.log(moment(fecha2).format('MM/DD/YYYY  HH:MM:SS'));
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.15.1/moment.min.js"></script>

javascript
Martin Hope
userStack
Asked: 2020-10-11 12:51:54 +0800 CST
  • 0

I want to keep the decimals, I have a long number 120.29998999867869and I want to cut it with 5 decimal places, the desired result is 120.299998, I try the following code but I get120.30000

let num = 120.29999999867869;
console.log(num.toFixed(5));

javascript
Martin Hope
userStack
Asked: 2020-08-18 09:50:13 +0800 CST
  • 2

I have arrays that I want to save in the database, the arrays have about 1000 elements, should I save them in string or in what type?

    +--------------------+ 
    tabla caracteristicas 
    piel [datos] 
    ojos [datos] 
    expresiones  [datos]
   +--------------------+

I must save the complete arrays and not element by element

in the bd I put

piel           varchar(1000) not null,

But what if my skin array has 2000 elements? varchar(1000) would no longer suffice, do I need unlimited size?

Note : Also, if I want to save 1000 elements with varchar(1000) it would not supply either, because since it is a string it counts up to the brackets, commas...

when I insert with json ( VALUES (1,'{"data": {"language": "spanish", "age": 39}}',1,1);) according to @Alfredo's answer I get the following:

enter image description here

mariadb
Martin Hope
userStack
Asked: 2020-08-08 15:36:24 +0800 CST
  • 0

I have 2 routers, for the example

router1 

app.post('/consultas', function (req, res) {

    req.session.nombre = 'administrador';
   console.log('prueba',req.session.nombre); // ahi la session se guarda bien
});

router2

router.get('/', function (req, res) {
    console.log('recuperar session   ', req.session);// sale undefined
}

How can I get the session on both routers?

javascript
Martin Hope
userStack
Asked: 2020-07-23 17:51:13 +0800 CST
  • 4

Out of curiosity, how can you determine if a div is full?

Full example :

enter image description here

The above image shows a filled div, because there is no space to continue typing, the word hello filled the limit of the div.

Example that it is not full (because it still has space below to continue writing)

enter image description here

full != not empty

As @A.Cedano says "determining if it is full depends on various factors such as font size".

Can this example help? http://jsfiddle.net/yfSUk/3

html
Martin Hope
userStack
Asked: 2020-07-22 22:34:54 +0800 CST
  • 2

I have the following arrangement:

let arreglo=[{'class':1,'var':1, 'valor':50},
            {'class':3,'var':2, 'valor':150},
            {'class':1,'var':2, 'valor':200},
            {'class':1,'var':1, 'valor':60},
            {'class':3,'var':2, 'valor':520},
            {'class':1,'var':2, 'valor':250}];

I want to discriminate by ordering according to the 'class' attribute

 [{'class':1,'var':1, 'valor':50},
        {'class':1,'var':2, 'valor':200},
        {'class':1,'var':1, 'valor':50},
        {'class':1,'var':2, 'valor':250}]

        [{'class':3,'var':2, 'valor':150},
        {'class':3,'var':2, 'valor':520}];

then discriminate according to the 'var' attribute to get

[{'class':1,'var':1, 'valor':50},
         {'class':1,'var':1, 'valor':50},
         {'class':1,'var':2, 'valor':200},
        {'class':1,'var':2, 'valor':250}]
        [{'class':3,'var':2, 'valor':150},
        {'class':3,'var':2, 'valor':520}];

my code is the following but what I do is discriminate and then I would have to join the arrays, I want a more efficient way.

let arreglo = [{'class': 1,'var': 1,'valor': 50},
  {'class': 3, 'var': 2,'valor': 150  },
  {'class': 1, 'var': 2,'valor': 200  },
  {'class': 1, 'var': 1,'valor': 60   },
  {'class': 3, 'var': 2,'valor': 520 },
  {'class': 1, 'var': 2,'valor': 250 }
];

function filtrarSegunVariable(arreglo, variable, condicion) {
  return arreglo.filter(function(x) {
    if (x[variable] === condicion) {
      return x;
    }
  })
}
let class1 = filtrarSegunVariable(arreglo, 'class', 1);
let class3 = filtrarSegunVariable(arreglo, 'class', 3);
console.log(filtrarSegunVariable(class1, 'var', 1));
console.log(filtrarSegunVariable(class1, 'var', 2));
console.log(filtrarSegunVariable(class3, 'var', 1));
console.log(filtrarSegunVariable(class3, 'var', 2));

note: values ​​1, 2, 3 must be strings

javascript
Martin Hope
userStack
Asked: 2020-07-10 08:38:43 +0800 CST
  • 6

I want to replace all the words with span, my code is as follows:

let written = '';
document.getElementById('test').addEventListener('keyup', function(e) {
  var palabra = written;
  written += String.fromCharCode(e.which);
  if (e.which === 32) {
    let text = document.getElementById('test').innerHTML;
    console.log(text);
    var wordsWithSpan = text.split(' ').map(function(c) {
      return '<span class="word">' + c + '</span>';
    }).join('');

    document.getElementById('test').innerHTML = wordsWithSpan;
  }

});
.word {
  color: red;
  padding-right: 2px;
}

div {
  margin: 50px;
}
<div contenteditable="true" id="test">hola mundo tierra</div>

At the moment it only works with the first attempt ( press space bar ), from the second attempt I get the text but with plainspan text labels .

What I need is to get on nodes not on text.

javascript
Martin Hope
userStack
Asked: 2020-06-25 16:55:20 +0800 CST
  • 3

I'm implementing a spellchecker, I have a wrapper where each new spelled word is placed in a new div, instead of being placed as ordinary text.

I am putting each word in a div, so that the word suggestions are displayed, is this necessary? or can I put it in span? or on no label?

With div I achieve the display of suggestions, when I try with span it does NOT work .

enter image description here

enter image description here

To see the functionality, type any word and press the space bar

let written = '';
document.getElementById('parent').addEventListener('keypress', function(e) {

  written += String.fromCharCode(e.which);

  if (e.which === 32) {
    let newDivWord = document.createElement('div');

    newDivWord.appendChild(document.createTextNode(written));
    newDivWord.classList.add('root');
    newDivWord.id = document.getElementById('parent').childElementCount + 1;
    document.getElementById('parent').appendChild(newDivWord);
    console.log(document.getElementById('parent'));
    written = "";
  }
})
#parent>div {
  border-color: yellow;
  float: left;
}

.root {
  padding-right: 2px;
}
<div id="parent" contenteditable=true style="border: black 2px solid; height:200px">
  <div class="root" id="1">Qué</div>
  <div class="root" id="2">es</div>
  <div class="root" id="3">Lorem</div>
  <div class="root" id="4">Ipsum</div>
</div>

should the typed text that is not inside the new div be deleted?

The future functionality of my problem would be: , but if you help me I would be infinitely grateful.

The text What is Lorem Ipsum if I type 'hello' before lorem it should be 'What is hello Lorem Ipsum', in its own div.

The text What is Lorem Ipsum if I type 'hello' after Ipsum it should be 'What is Lorem Ipsum hello', in its own div.

The text What is Lorem Ipsum if I type 'hello' before 'WHAT' it should be 'hello What is Lorem Ipsum hello', in a div of its own.

The text What is Lorem Ipsum if I type 'hello' before 'sum' it should be 'hello What is Lorem Iphola sum hello', a div would be created for Iphola and sum would be another div.

What I need now in the present: I want the new word not to be repeated, one of them is the writing of the normal text, and the other repetition is the creation of the new div, and the new div should be added at the end.

javascript
Martin Hope
userStack
Asked: 2020-03-24 19:23:12 +0800 CST
  • 4

I want to move the three dots consecutively

enter image description here

but they don't move vertically, I managed to move them horizontally

I found what I want but with css https://codepen.io/mattonit/pen/vLoddq

can it with javascript?

let rootElements = document.querySelectorAll("div.dot");
let i = 0;

setInterval(() => {
  i++;
  if (i % 10 > 2) {
    i = 0;
  }
  rootElements[i % 10].style.margin = "0px";
  for (let j = 0; j < rootElements.length; j++) {
    if (j !== i) {
      rootElements[j].style.margin = "-1px";
    }
  }
}, 500);
.dot {
  display: inline-block;
  margin: -1px;
}
<div>
  <div class="dot">⚫</div>
  <div class="dot">⚫</div>
  <div class="dot">⚫</div>
</div>

javascript
Martin Hope
userStack
Asked: 2020-03-21 14:31:06 +0800 CST
  • 1

I currently have 2 underlines that I want to join in the middle of the word

how to move the underline in the middle of the word? when I try it goes down + the word

.err {
  border-top: 2px dotted red;
  display: inline-block;
  position: relative;
  top: 5px;
  z-index: 2;
}

.err:after {
  content: '';
  width: 100%;
  border-top: 2px dotted red;
  position: absolute;
  font-size: 16px;
  top: 5px;
  left: -2px;
  display: block;
  height: 4px;
}
<div>hola
  <div class="err">mundo</div> informatico</div>

The underline should simulate an Error line, but in the middle of the word

enter image description here

I have the underline located above that simulates to be an ERROR line, but I want to center it in the middle

.err {
  border-top: 2px dotted red;
  display: inline-block;
  position: relative;
  top: -1px;
  z-index: 2;
}

.err:after {
  content: '';
  width: 100%;
  border-bottom: 2px dotted red;
  position: absolute;
  font-size: 16px;
  top: -5px;
  left: -2px;
  display: block;
  height: 4px;
}
<div>hola
  <div class="err">mundo</div> informatico</div>

css
Martin Hope
userStack
Asked: 2020-03-17 08:52:29 +0800 CST
  • 3

I need to get the distance between two points, according to the formula is

enter image description here

but the data provided by google maps is lat, log and I need the distance in meters

var map;

function initialize() {
  var myLatlng = new google.maps.LatLng(41.38, 2.18);
  var myLatlng2 = new google.maps.LatLng(41.35, 2.18);

  var myOptions = {
    zoom: 13,
    center: myLatlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  map = new google.maps.Map(document.getElementById("map-canvas"), myOptions);

  var marker = new google.maps.Marker({
    draggable: true,
    position: myLatlng,
    map: map,
    title: "Your location"
  });
  var marker2 = new google.maps.Marker({
    draggable: true,
    position: myLatlng2,
    map: map,
    title: "Your location"
  });

  google.maps.event.addListener(map, 'click', function(event) {

    alert(event.latLng);
  });
}

google.maps.event.addDomListener(window, 'load', initialize);
html,
body,
#map-canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?callback=myMap"></script>
<div id="map-canvas" style="border: 2px solid #3872ac;"></div>

javascript
Martin Hope
userStack
Asked: 2020-02-06 08:33:44 +0800 CST
  • 2

I am trying to useangular-material 

<mat-menu #menu="matMenu">
  <button mat-menu-item>
    <mat-icon>dialpad</mat-icon>
    <span>Redial</span>
  </button>
  <button mat-menu-item disabled>
    <mat-icon>voicemail</mat-icon>
    <span>Check voicemail</span>
  </button>
  <button mat-menu-item>
    <mat-icon>notifications_off</mat-icon>
    <span>Disable alerts</span>
  </button>
</mat-menu>

But I get error:

There is no directive with "exportAs" set to "matMenu"

The versions of my project:

  __ _  _ __    __ _  _   _ | |  __ _  _ __         ___ | |(_)
 / _` || '_ \  / _` || | | || | / _` || '__|_____  / __|| || |
| (_| || | | || (_| || |_| || || (_| || |  |_____|| (__ | || |
 \__,_||_| |_| \__, | \__,_||_| \__,_||_|          \___||_||_|
               |___/
angular-cli: 1.0.0-beta.28.3
node: 6.11.4
os: win32 x64
@angular/animations: 5.2.3
@angular/cdk: 5.1.1
@angular/common: 5.2.3
@angular/compiler: 5.2.3
@angular/core: 5.2.3
@angular/forms: 5.2.3
@angular/http: 5.2.3
@angular/material: 5.1.1
@angular/platform-browser: 5.2.3
@angular/platform-browser-dynamic: 5.2.3
@angular/router: 5.2.3
@angular/cli: 1.6.7
@angular/compiler-cli: 5.2.3
@angular/language-service: 5.2.3
angular5
Martin Hope
userStack
Asked: 2020-11-24 20:09:50 +0800 CST
  • 4

I made 1 project that is divided into frontendand backend, the frontend part is made in angularjs 1.x and the backend part is made in nodejs express.

Currently the backend part I tested with simple html that is not incorporated with angular.

To run the frontend part I do it with gulp:

gulp.task('web-server', function () {
    gulp.src('.')
      .pipe(server({
        livereload: false,
        directoryListing: false,
        open: true,
        log: 'debug',
        clientConsole: false,
        port: 8080,
        host: 'localhost',
        middleware: function (connect, opt) {return [historyApiFallback()];}
      }));
  });

And for the backend part:

app.listen(3000);

In other words, the two projects listen to ports 8080 and 3000 respectively, my question is , how can I make the 2 projects run with a single command? I think they should both listen to the same port.

Note: the project is here: https://github.com/x-rw/decisionTree/tree/master/node_app

The structure of my project is: enter image description here

I'm too confused by the structure, should there be two files package.jsonand two folders node_modules?

angularjs
Martin Hope
userStack
Asked: 2020-04-26 06:17:12 +0800 CST
  • 3

Following this tutorial https://www.tutorialspoint.com/maven/maven_environment_setup.htm

Download maven from http://maven.apache.org/download.cgi

I am adding these variables: in the system path.

M2_HOME:
C:\programs\apache-maven-3.0.3

M2:
%M2_HOME%\bin

JAVA_HOME:
C:\Program Files\Java\jdk1.6.0_25

Path:
%JAVA_HOME%\bin; %M2%

does not recognize the commandmvn

edit: 1

The directory bincontains: enter image description here

edit: 2

for the creation of the variables for maven, create a variable with its values, in this way:

enter image description here

I followed the steps of @Voiser

restart the machine, now I get this error Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher

edit 3: the variables on my system are:

C:\Users\DH-User15>echo %M2_HOME% %M2_HOME%

C:\Users\DH-User15>echo %M3_HOME% C:\apache-maven-3.5.0

C:\Users\DH-User15>echo %M2% C:\apache-maven-3.5.0\bin

C:\Users\DH-User15>echo %path% ... C:\apache-maven-3.5.0\apache-maven\src\bin

java