jQuery -
ãããè¿å¹ŽãWeb éçºã®äž»èŠããŒã«ãšããŠã®å°äœã¯å€±ãããŠããŠããŸãã jQuery ã人æ°ã«ãªã£ãçç±ãšæ代é
ãã«ãªã£ãçç±ããããŠææ°ã® Web ãµã€ããäœæããããã« jQuery ã䜿çšããããšãäŸç¶ãšããŠæšå¥šãããã®ã¯ã©ã®ãããªå Žåãªã®ããèŠãŠã¿ãŸãããã
jQuery ã®ç°¡åãªæŽå²
ãžã§ã³ã»ã¬ã·ã° (
jQuery ã¯ããJavaScript ã¯ã³ãŒãã£ã³ã°ã楜ãããªããã°ãªããªãããšããã¢ãããŒã«åºã¥ãã Javascript ã©ã€ãã©ãªã§ãã jQuery ã¯ãäžè¬çãªç¹°ãè¿ãã®ã¿ã¹ã¯ãåŠçããäžèŠãªããŒã¯ã¢ããããã¹ãŠåãé€ããã¿ã¹ã¯ãçãããšã¬ã¬ã³ãã§ãã¯ãªãŒã³ã«ããŸãã
jQuery ã«ã¯ XNUMX ã€ã®äž»ãªå©ç¹ããããŸãã XNUMX ã€ç®ã¯ãWeb ããŒãžãæäœããããã®äŸ¿å©ãª API ã§ãã ç¹ã«ãèŠçŽ ãéžæããããã®åŒ·åãªæ¹æ³ãæäŸããŸãã jQuery ã§ã¯ãID ãã¯ã©ã¹ã§éžæã§ããã ãã§ãªããè€éãªåŒãèšè¿°ããããšãã§ããŸããããšãã°ãä»ã®èŠçŽ ãšã®é¢ä¿ã«åºã¥ããŠèŠçŽ ãéžæããããšãã§ããŸãã
// Select every item within the list of people within the contacts element
$('#contacts ul.people li');
æéã®çµéãšãšãã«ãéžæã¡ã«ããºã ã¯å¥ã®ã©ã€ãã©ãªã«é²åããŸãã
ãã®ã©ã€ãã©ãªã® XNUMX çªç®ã®å©ç¹ã¯ããã©ãŠã¶éã®éããæœè±¡åãããŠããããšã§ãã åœæããã¹ãŠã®ãã©ãŠã¶ã§ç¢ºå®ã«åäœããã³ãŒããæžãã®ã¯å°é£ã§ããã
æšæºåãæ¬ åŠããŠãããããéçºè
ã¯ãã©ãŠã¶ãšãšããž ã±ãŒã¹éã®å€æ°ã®éããèæ
®ããå¿
èŠããããŸããã ãèŠãŠã¿ãŸããã
// If Mozilla is used
if ( jQuery.browser == "mozilla" || jQuery.browser == "opera" ) {
// Use the handy event callback
jQuery.event.add( document, "DOMContentLoaded", jQuery.ready );
// If IE is used, use the excellent hack by Matthias Miller
// http://www.outofhanwell.com/blog/index.php?title=the_window_onload_problem_revisited
} else if ( jQuery.browser == "msie" ) {
// Only works if you document.write() it
document.write("<scr" + "ipt id=__ie_init defer=true " +
"src=javascript:void(0)></script>");
// Use the defer script hack
var script = document.getElementById("__ie_init");
script.onreadystatechange = function() {
if ( this.readyState == "complete" )
jQuery.ready();
};
// Clear from memory
script = null;
// If Safari is used
} else if ( jQuery.browser == "safari" ) {
// Continually check to see if the document.readyState is valid
jQuery.safariTimer = setInterval(function(){
// loaded and complete are both valid states
if ( document.readyState == "loaded" ||
document.readyState == "complete" ) {
// If either one are found, remove the timer
clearInterval( jQuery.safariTimer );
jQuery.safariTimer = null;
// and execute any waiting functions
jQuery.ready();
}
}, 10);
}
ãã㊠jQuery ã®ãããã§ãéçºè ã¯ããããã¹ãŠã®èœãšãç©Žã«é¢ããå¿é ãã©ã€ãã©ãªãéçºããããŒã ã®è©ã«ç§»ãããšãã§ããŸããã
ãã®åŸãjQuery ã«ãããã¢ãã¡ãŒã·ã§ã³ã Ajax ãªã©ã®ããè€éãªãã¯ãããžã®å®è£
ã容æã«ãªããŸããã ãã®ã©ã€ãã©ãªã¯äºå®äžãWeb ãµã€ãã®æšæºäŸåé¢ä¿ãšãªã£ãŠããŸãã ãããŠä»æ¥ãããã¯ã€ã³ã¿ãŒãããã®å€§ããªã·ã§ã¢ãå ããŠããŸãã W3Techs ã¯æ¬¡ã®ããã«ä¿¡ããŠããŸãã
jQuery éçºã®ç®¡çããã圢åŒçã«ãªããŸããã 2011幎ã«ããŒã ã¯
2015 幎ã«ãjQuery Foundation 㯠Dojo Foundation ãšå䜵ããŸããã
ç¶æ³ã®å€å
ããããè¿å¹Žã§ã¯jQuery
ãã©ãŠã¶
ããŸããŸãªçç±ããããã©ãŠã¶ã®éããå¶éã¯ããã»ã©éèŠã§ã¯ãªããªããŸããã ãŸããæšæºåãæ¹åãããŸããã äž»èŠãªãã©ãŠã¶éçºè
(AppleãGoogleãMicrosoftãMozilla) ãååããŠéçºãè¡ã£ãŠããŸãã
ãã©ãŠã¶ãŒã¯äŸç¶ãšããŠå€ãã®éèŠãªç¹ã§äºãã«ç°ãªããŸããããã³ããŒã¯å°ãªããšãããã©ãŠã¶ãŒã®ä»£ããã«å
±éã®ããŒã¿ããŒã¹ãæ€çŽ¢ããŠäœæããæ段ãæã£ãŠããŸãã
// jQuery
$.getJSON('https://api.com/songs.json')
.done(function (songs) {
console.log(songs);
})
// native
fetch('https://api.com/songs.json')
.then(function (response) {
return response.json();
})
.then(function (songs) {
console.log(songs);
});
ã¡ãœãã
// jQuery
const fooDivs = $('.foo div');
// native
const fooDivs = document.querySelectorAll('.foo div');
ã䜿çšããŠèŠçŽ ã¯ã©ã¹ãæäœã§ããããã«ãªããŸããã
// jQuery
$('#warning').toggleClass('visible');
// native
document.querySelector('#warning').classList.toggle('visible');
ãµã€ã
ãã€ãã£ãæ©èœã䜿çšãããšãããŒãžã®ããã©ãŒãã³ã¹ãåäžãããããšãã§ããŸãã å€ãã®
XNUMX çªç®ã®çç±ã¯ããã©ãŠã¶ãŒã®æŽæ°ã以åãããã¯ããã«é«éã«ãªã£ãããšã§ãã ã»ãšãã©ã®äººã䜿çšããŸã
ããã¯ããã©ãŠã¶ã®æ°ããæ©èœããã°ä¿®æ£ãããè¿
éã«é
åžãããéçºè
ã¯ãªãªãŒã¹ããããŸã§åŸ
ã€å¿
èŠããªãããšãæå³ããŸãã
2000 çªç®ã®çç±ã¯ãInternet Explorer ãå®å šã«ç¡é¢ä¿ãªç¶æ ã«è¿ã¥ããŠããããšã§ãã IE ã¯é·ãéãäžçäžã® Web éçºã®æ©ã¿ã®çš®ã§ããã ãã®ãã°ã¯åºç¯å²ã«åãã§ããŸãããIE 㯠XNUMX 幎代ã«äž»æµã§ãããåžžç·ã®æŽæ°æŠç¥ãæ¡çšããŠããªãã£ãã®ã§ãå€ãããŒãžã§ã³ãäŸç¶ãšããŠäžè¬çã§ãã
2016 幎ãMicrosoft 㯠IE ã®å»æ¢ãå éããŸããã
jQuery ã§ãããIE 8 以äžã®ãµããŒããåæ¢ããŸããã
æ°ãããã¬ãŒã ã¯ãŒã¯
jQuery ã®åºçŸä»¥æ¥ãææ°ã®ãªãŒããŒãå«ãå€ãã®ãã¬ãŒã ã¯ãŒã¯ãäœæãããŠããŸããã
ãŸãããŠãŒã¶ãŒ ã€ã³ã¿ãŒãã§ã€ã¹ãã³ã³ããŒãã³ãã«ç°¡åã«åé¢ã§ããããã«ãªããŸãã ãã¬ãŒã ã¯ãŒã¯ã¯ãããŒãžã®ã¬ã³ããªã³ã°ãšæŽæ°ãåŠçããããã«èšèšãããŠããŸãã ãŸããjQuery ã¯éåžžãæŽæ°ã®ã¿ã«äœ¿çšãããæåã®ããŒãžããµãŒããŒã«æäŸããã¿ã¹ã¯ã¯æ®ããŸãã
äžæ¹ãReactãAngularãVue ã³ã³ããŒãã³ãã䜿çšãããšãHTMLãã³ãŒããããã«ã¯ CSS ãç·å¯ã«çµåã§ããŸãã ã³ãŒã ããŒã¹ãå€ãã®èªå·±å®çµåé¢æ°ãã¯ã©ã¹ã«åå²ããã®ãšåãããã«ãã€ã³ã¿ãŒãã§ã€ã¹ãåå©çšå¯èœãªã³ã³ããŒãã³ãã«åå²ããæ©èœã«ãããè€éãªãµã€ãã®æ§ç¯ãšä¿å®ã容æã«ãªããŸãã
XNUMX çªç®ã®å©ç¹ã¯ãæè¿ã®ãã¬ãŒã ã¯ãŒã¯ã宣èšåãã©ãã€ã ã«åŸã£ãŠããããšã§ãããã®ãã©ãã€ã ã§ã¯ãéçºè ãã€ã³ã¿ãŒãã§ã€ã¹ãã©ãããã¹ãããèšè¿°ããæãŸãããã®ãå®çŸããããã«å¿ èŠãªå€æŽã¯ãã¹ãŠãã¬ãŒã ã¯ãŒã¯ã«ä»»ããŸãã ãã®ã¢ãããŒãã¯ãjQuery ã³ãŒãã®ç¹åŸŽã§ããåœä»€åã¢ãããŒããšã¯å¯Ÿç §çã§ãã
jQuery ã§ã¯ãå€æŽãå ããæé ãæ瀺çã«æžãçããŸãã ãããŠã宣èšåãã¬ãŒã ã¯ãŒã¯ã§ã¯ãããã®ããŒã¿ã«ããã°ãã€ã³ã¿ãŒãã§ã€ã¹ã¯æ¬¡ã®ããã«ãªããŸããããšèšãããšãã§ããŸãã ããã«ããããã°ã®ãªãã³ãŒãã®èšè¿°ãã¯ããã«ç°¡åã«ãªããŸãã
éçºè 㯠Web ãµã€ãéçºã«æ°ããã¢ãããŒããæ¡çšããŠãããããjQuery ã®äººæ°ã¯äœäžããŠããŸãã
jQuery ããã€äœ¿çšããã?
ãããããšã ã§ãªããã°ãªããŸãã jQueryã䜿çšããŸãã?
ãããžã§ã¯ãã®è€éããå¢ãå Žåã¯ãè€éããææ矩ã«ç®¡çã§ããå¥ã®ã©ã€ãã©ãªãŸãã¯ãã¬ãŒã ã¯ãŒã¯ããå§ããããšããå§ãããŸãã ããšãã°ãã€ã³ã¿ãŒãã§ã€ã¹ãã³ã³ããŒãã³ãã«åå²ããŸãã ãã®ãããªãµã€ã㧠jQuery ã䜿çšãããšãæåã¯åé¡ãªãããã«èŠããŸãããããã«ã©ã®ãã©ã°ã¡ã³ããããŒãžã®ã©ã®éšåã«åœ±é¿ãäžãããããããªãã¹ãã²ãã㣠ã³ãŒãã«ãªã£ãŠããŸããŸãã
ç§ããã®ãããªç¶æ³ã«é¥ã£ãããšããããŸãããäœããå€ããããšãããšããããã¯é£ããäœæ¥ã®ããã«æããããŸãã jQuery ã»ã¬ã¯ã¿ãŒã¯ãµãŒããŒã«ãã£ãŠçæããã HTML æ§é ã«äŸåãããããäœãå£ããªããšããä¿èšŒã¯ãããŸããã
ã¹ã±ãŒã«ã®å¯Ÿæ¥µã«ããã®ã¯ãå°ãã®ã€ã³ã¿ã©ã¯ãã£ãæ§ãåçã³ã³ãã³ãã®ã¿ãå¿ èŠãšããã·ã³ãã«ãªãµã€ãã§ãã ãã€ãã£ã API ã䜿çšããŠã§ããããšã¯ä»ã«ãããããããããããã®ãããªå Žåãããã©ã«ã㧠jQuery ã䜿çšããã€ããã¯ãããŸããã
ããšããã£ãšåŒ·åãªãã®ãå¿
èŠãªå Žåã§ããç§ã¯ç¹åããã©ã€ãã©ãªãæ¢ããŸãã
jQuery ã䜿çšããæ倧ã®æ ¹æ ã¯ãWeb ãµã€ãã®ããã³ããšã³ãã«å æ¬çãªæ©èœãæäŸããããšã ãšæããŸãã ããŸããŸãªãã€ãã£ã API ãç¹æ®ãªã©ã€ãã©ãªãåŠç¿ãã代ããã«ãjQuery ããã¥ã¡ã³ããèªãã ãã§ãããã«çç£æ§ãé«ããããšãã§ããŸãã
åœä»€åã¢ãããŒãã¯æ¡åŒµæ§ãé«ããããŸããããä»ã®ã©ã€ãã©ãªã®å®£èšåã¢ãããŒããããåŠç¿ãç°¡åã§ãã æããã«æ©èœãå¶éãããŠãããµã€ãã®å Žåã¯ãjQuery ã䜿çšããŠèœã¡çããŠäœæ¥ããããšããå§ãããŸããã©ã€ãã©ãªã¯è€éãªã¢ã»ã³ããªãã³ã³ãã€ã«ãå¿ èŠãšããŸããã
ããã«ããµã€ããæéã®çµéãšãšãã«è€éã«ãªããªããšãã確信ããããjQuery ãããå€ãã®ã³ãŒããèšè¿°ããå¿ èŠããããã€ãã£ãæ©èœãæ°ã«ããªãå Žåã«ã¯ãjQuery ãé©ããŠããŸãã
å€ãããŒãžã§ã³ã® IE ããµããŒãããå¿ èŠãããå Žåã¯ããã®ã©ã€ãã©ãªã䜿çšããããšãã§ããŸãã ããããã°ãIE ãæã人æ°ã®ãããã©ãŠã¶ã ã£ãæ代ãšåãããã«ãjQuery ãæ©èœããŸãã
Prospection
jQuery ãããã«ãªããªãããã§ã¯ãããŸããã 圌女
jQuery ã®æ©èœãå€§å¹ ã«å€æŽãããªãéããã©ã€ãã©ãªã®äœ¿çšéã¯ä»åŸæ°å¹Žéã§ãã£ãããšãããã確å®ã«æžå°ãç¶ããå¯èœæ§ããããŸãã æ°ãã Web ãµã€ãã¯æåããææ°ã®ãã¬ãŒã ã¯ãŒã¯ã䜿çšããŠæ§ç¯ãããåŸåããããjQuery ã®é©åãªäœ¿çšäŸã¯ãŸããŸãçšã«ãªã£ãŠããŠããŸãã
Web éçºããŒã«ãæ代é
ãã«ãªãé床ãæ°ã«å
¥ããªã人ãããŸãããç§ã«ãšã£ãŠã¯ãããæ¥éãªé²æ©ã®èšŒæ ã§ãã jQuery ã®ãããã§ãå€ãã®ããšãããè¯ãã§ããããã«ãªããŸããã 圌女ã®åŸç¶è
ã«ã€ããŠãåæ§ã§ãã
åºæïŒ habr.com