{"id":192270,"date":"2020-11-05T21:15:16","date_gmt":"2020-11-05T13:15:16","guid":{"rendered":"http:\/\/4563.org\/?p=192270"},"modified":"2020-11-05T21:15:16","modified_gmt":"2020-11-05T13:15:16","slug":"javascript-%e4%b8%ad%ef%bc%8c%e5%89%8d%e7%ab%af%e6%8d%95%e6%8d%89%e9%94%ae%e7%9b%98%e6%8c%89%e9%94%ae%ef%bc%8c%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e7%bb%84%e5%90%88%e9%94%ae%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=192270","title":{"rendered":"JavaScript \u4e2d\uff0c\u524d\u7aef\u6355\u6349\u952e\u76d8\u6309\u952e\uff0c\u5982\u4f55\u5904\u7406\u7ec4\u5408\u952e\u7684\u95ee\u9898\uff1f"},"content":{"rendered":"
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JavaScript \u4e2d\uff0c\u524d\u7aef\u6355\u6349\u952e\u76d8\u6309\u952e\uff0c\u5982\u4f55\u5904\u7406\u7ec4\u5408\u952e\u7684\u95ee\u9898\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : black11black <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5982\u9898\uff0c\u7b80\u5355\u5b9e\u73b0\u4e86\u4e00\u4e0b\u6309\u952e\u6355\u6349\uff0c\u4f46\u662f\u590d\u6742\u60c5\u51b5\u641e\u4e0d\u5b9a<\/p>\n

\u60f3\u5b9e\u73b0\u7684\u9700\u6c42\u662f\u5728\u9875\u9762\u91cc\u6bd4\u5982\u6309\u4e00\u4e0b Ctrl\uff0c\u9875\u9762\u5feb\u8fdb\u4e00\u9875\uff0c\u800c\u5206\u522b\u6309\u7ec4\u5408\u952e Ctrl+1,Ctrl+2,Ctrl+3….\u7b49\u7b49\u5206\u522b\u5bf9\u5e94\u4e0d\u540c\u7684\u529f\u80fd\u3002<\/p>\n

\u5982\u679c\u6309\u7167 document.onkeydown \u7684\u505a\u6cd5\u7684\u8bdd\uff0c\u6309\u7ec4\u5408\u952e\u7684\u65f6\u5019\u540c\u65f6\u4e5f\u4f1a\u89e6\u53d1 Ctrl \u7684\u529f\u80fd\uff0c\u8fd9\u5c31\u4e0d\u5bf9\u4e86\u3002\u53e6\u5916 Ctrl \u5982\u679c\u6309\u4f4f\u7684\u8bdd\u4f1a\u8fde\u7eed\u89e6\u53d1\u7ed1\u5b9a\u65b9\u6cd5\uff0c\u5bfc\u81f4\u9875\u9762\u591a\u6b21\u6e32\u67d3\uff0c\u662f\u5426\u6709\u529e\u6cd5\u9488\u5bf9 Ctrl \u8fde\u7eed\u89e6\u53d1\u5355\u72ec\u641e\u4e00\u4e2a\u7ed1\u5b9a\u5462\uff1f<\/p>\n

\u6700\u540e\u95ee\u4e00\u4e0b\u5e26\u4f6c\uff0c\u7f51\u4e0a\u67e5\u5230\u8fd9\u4e9b\u6355\u6349\u65b9\u5f0f\uff0c\u6709\u4ec0\u4e48\u533a\u522b\u554a\u3002\u8c22\u8c22<\/p>\n

window.addEventListener('keypress'()=>{}) document.onkeydown <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (4<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : zsdroid <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 e.ctrlKey                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : lithbitren <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e00\u822c\u4e0d\u7528 addEventListenerr(‘keypress’, () => {})\uff0c\u4e0d\u597d\u5355\u72ec\u76d1\u542c\u529f\u80fd\u952e\uff0c\u4e0d\u597d\u9632\u5192\u6ce1\uff0c\u6d4f\u89c8\u5668\u5feb\u6377\u952e\u4e5f\u5bb9\u6613\u51b2\u7a81\u3002<\/p>\n
    \u5224\u65ad\u4e8b\u4ef6\u662f\u5426\u662f\u7ec4\u5408\u952e\uff0c\u5728 document.onkeydown \u7684\u5b9e\u73b0\u51fd\u6570\u91cc\u9762\u67e5\u770b event.ctrlKey \u5c31\u884c\uff0c\u6ce8\u610f\u8fd4\u56de false \u9632\u6b62\u6d4f\u89c8\u5668 ctrl+nwt \u4ee5\u5916\u7684\u5feb\u6377\u952e\u5192\u6ce1\u3002<\/p>\n
    \u7136\u540e\u53ef\u4ee5\u8003\u8651\u58f0\u660e\u4e00\u4e2a\u5168\u5c40\u5e03\u5c14\u53d8\u91cf\u4f5c\u4e3a\u63a7\u5236\u9501\u5e76\u76d1\u542c document.onkeyup\uff0c\u666e\u901a\u6570\u5b57\u5b57\u6bcd keydown \u4e14\u662f\u7ec4\u5408\u952e\u7684\u65f6\u5019\u52a0\u9501\u518d\u6267\u884c\u529f\u80fd\uff0cctrl \u952e keyup \u7684\u65f6\u5019\u770b\u770b\u6709\u6ca1\u6709\u88ab\u9501\uff0c\u6709\u9501\u7684\u8bdd\u8bf4\u660e\u662f\u7ec4\u5408\u952e\u5c31\u89e3\u9501\u7136\u540e\u8df3\u8fc7\uff0c\u6ca1\u9501\u7684\u8bdd\u8bf4\u660e\u662f\u5355\u72ec\u6309\u4e86 ctrl \u5219\u53ef\u4ee5\u6267\u884c ctrl \u7684\u529f\u80fd\uff0c\u7136\u540e\u53ef\u4ee5\u52a0\u4e2a\u9501\uff0c\u7528 settimeout \u8bbe\u5b9a\u4e00\u4e24\u79d2\u540e\u81ea\u52a8\u89e3\u9501\u5c31\u53ef\u4ee5\u9632\u6b62\u5feb\u901f\u7684\u8fde\u7eed\u89e6\u53d1\u4e86\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : lithbitren <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u8fc7 onkeyup \u672c\u8eab\u5f88\u96be\u8fde\u53d1\uff0c\u5982\u679c\u4e0d\u4ecb\u610f\u624b\u6296 ctrl \u6309\u5f88\u591a\u6b21\u7684\u8bdd\uff0c\u5ef6\u65f6\u89e3\u9501\u4e5f\u53ef\u4ee5\u4e0d\u7528\u5199\u8fdb onkeyup \u7684\u76d1\u542c\u903b\u8f91\u91cc                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : rodrick <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 “` 
     let lockFlag = false
     document.onkeydown = function (e) {
     var keyCode = e.keyCode || e.which || e.charCode;
     var ctrlKey = e.ctrlKey || e.metaKey;
     if (ctrlKey && keyCode == 49) {
     e.preventDefault
     lockFlag = true
     console.log(‘\u7ec4\u5408\u4e8b\u4ef6’);
     return false
     }
     }<\/p>\n
     document.onkeyup = function (e) {
     var keyCode = e.keyCode || e.which || e.charCode;
     \/\/ ctrl \u62ac\u8d77\u4e14\u9501\uff08\u7ec4\u5408\u4e8b\u4ef6\uff09 \u89e3\u9501 
     if (keyCode == 17 && lockFlag) {
     \/\/ e.preventDefault
     lockFlag = false
     console.log(‘\u662f\u7ec4\u5408\u4e8b\u4ef6\uff0c\u4e0d\u6267\u884c ctrl \u4e8b\u4ef6\uff0clockflag:’ + lockFlag);
     \/\/ return false
     \/\/ ctrl \u62ac\u8d77\u4e14\u6ca1\u9501\uff08\u4e0d\u662f\u7ec4\u5408\u4e8b\u4ef6\uff09 
     } else if (keyCode == 17 && !lockFlag) {
     console.log(‘\u662f ctrl’);
     }
     }
    “`
    \u5206\u5f00\u5224\u65ad\u4e00\u4e0b\u5b8c\u4e8b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    JavaScript \u4e2d\uff0c\u524d\u7aef\u6355\u6349…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/192270"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=192270"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/192270\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=192270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=192270"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=192270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}