LukeHan 의 잡다한 기술 블로그

function getHex(list){ var cmd = ''; list.forEach((val)=>{ cmd += val.toString(16) + ' '; }); console.log(cmd);}getHex([101,49,56,48,54,100,48,102,52,56,102,102,48,48,102,102,48,49,102,102,48,52,48,48,102,102,13]);

개발 관련 문서 작성 중 페이지별 element 정보 목록을 추가할 필요가 있어 아래와 같이 작성하여 사용 하였다.  function printElement(elem){ var print = ''; document.querySelectorAll(elem).forEach((ipt)=>{ var txt = ipt.tagName.toLocaleLowerCase(); if('' != ipt.id) txt += '#' + ipt.id; if('' != ipt.className) txt += '.' + ipt.className.replaceAll(' ', '.'); print += txt + '\n'; }); console.log(print);}printElement('input[typ..

npm i html2canvas 위와 같이 입력하여 html2canvas 패키지 설치를 한다. const html2canvas = require('html2canvas'); function saveScreenshot(canvas){ const link = document.createElement("a"); link.download = 'lukehan.png'; canvas.toBlob(function(blob){ link.href = URL.createObjectURL(blob); link.click(); }); } html2canvas(document.body, { allowTaint: true, useCORS: true, scale: 1 }).then(saveScreenshot); 위와 같이 코드를 ..

JAVA public byte[] getImage(HttpServletRequest request, HttpServletResponse response) throws Exception{ BufferedImage bi = ImageIO.read(new File("c:\\image\\mypic.jpg")); ByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write(bi, "jpg", baos); return baos.toByteArray(); } javascript var httpRequest = new XMLHttpRequest(); httpRequest.open('GET', 'http://localhost:8080/image', tr..

const fs = require('fs'); const readline = require('readline'); // date and time function getToday(){ let date_ob = new Date(); let year = date_ob.getFullYear(); let month = ('0'+(date_ob.getMonth() + 1)).slice(-2); let date = ('0'+date_ob.getDate()).slice(-2); return year + '-' + month + '-' + date; } function getTime(){ let date_ob = new Date(); let hours = ('0'+date_ob.getHours()).slice(-2); ..

var list = ['aa','bb','22','gg','11','zz']; list.includes('gg'); //> true var list = [ {'name':'kim','code':'kk'} , {'name':'lee','code':'ll'} , {'name':'park','code':'pp'} ]; list.some(date => date.code == 'll'); //> true