{"id":198,"date":"2020-06-01T23:23:00","date_gmt":"2020-06-01T15:23:00","guid":{"rendered":"https:\/\/blog.indeex.club\/?p=198"},"modified":"2020-08-18T22:23:58","modified_gmt":"2020-08-18T14:23:58","slug":"%e7%bc%96%e8%be%91%e5%99%a8%e5%9f%ba%e6%9c%ac%e6%80%9d%e8%b7%af","status":"publish","type":"post","link":"https:\/\/blog.indeex.club\/index.php\/2020\/06\/01\/%e7%bc%96%e8%be%91%e5%99%a8%e5%9f%ba%e6%9c%ac%e6%80%9d%e8%b7%af\/","title":{"rendered":"\u7f16\u8f91\u5668\u57fa\u672c\u601d\u8def"},"content":{"rendered":"<hr \/>\n<h3>\u4e00\u3001contentEditable<\/h3>\n<p>div\u7684contentEditable\u5c5e\u6027\u53ef\u4ee5\u8ba9div\u8fdb\u5165\u7f16\u8f91\u6a21\u5f0f\uff0c\u7981\u6b62\u53ef\u4ee5\u4f7f\u7528contentEditable=false\u3002<\/p>\n<h3>\u4e8c\u3001Selection<\/h3>\n<p>\u6d4f\u89c8\u5668\u4e2d\u5185\u7f6e\u4e86\u83b7\u53d6\u7528\u6237\u64cd\u4f5c\u7684\u65b9\u6cd5\uff1a<\/p>\n<pre><code class=\"language-javascript line-numbers\">let selection = window.getSelection();\n<\/code><\/pre>\n<p>Selection \u5bf9\u8c61\u6709<strong>anchorNode<\/strong>\u548c<strong>focusNode<\/strong>\u5c5e\u6027\uff0c\u53ef\u4ee5\u7528\u6765\u83b7\u5f97\u9009\u4e2d\u90e8\u5206\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u5143\u7d20\uff0c\u4e0d\u8fc7\u4e00\u822c\u4f1a\u7528Range\u4ee3\u66ff\u3002\u8fd8\u6709\u4e00\u4e2a<strong>isCollapsed<\/strong>\u5c5e\u6027\uff0c\u4e3atrue\u65f6\uff0c\u4ee3\u8868\u9009\u62e9\u533a\u57df\u5f00\u59cb\u548c\u7ed3\u675f\u5728\u76f8\u540c\u7684\u70b9\uff0c\u4e5f\u5c31\u662f\u6ca1\u6709\u9009\u4e2d\u5185\u5bb9\u65f6\u5149\u6807\u95ea\u70c1\u7684\u6a21\u5f0f\u3002\u4fee\u6539\u9009\u62e9\u8303\u56f4\uff0c\u4e3b\u8981\u5c31\u662f\u5bf9Range\u5bf9\u8c61\u8fdb\u884c\u7f16\u8f91\u3002\u9996\u5148\u53ef\u4ee5\u901a\u8fc7\uff1a<\/p>\n<pre><code class=\"language-javascript line-numbers\">let range = selection.getRangeAt(0);\n<\/code><\/pre>\n<p>\u83b7\u53d6\u88ab\u9009\u4e2d\u7684\u7b2c\u4e00\u4e2a\u533a\u5757\uff0c\u4ee5\u6b64\u7c7b\u63a8\u5f80\u540e\u9009\u3002<\/p>\n<p>\u83b7\u5f97\u4e86Range\u5bf9\u8c61\uff0c\u5c31\u53ef\u4ee5\u83b7\u5f97\u9009\u4e2d\u533a\u57df\u5185\u5bb9\u4e86\u3002<\/p>\n<p>Range\u5bf9\u8c61\u83b7\u5f97\u9009\u62e9\u533a\u57df\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u70b9:<\/p>\n<pre><code class=\"language-javascript line-numbers\">range.startContainer \/\/\u5f00\u59cb\u70b9\u6240\u5728\u7684\u5bb9\u5668(\u5143\u7d20)\nrange.endOffset  \/\/ \u5f00\u59cb\u70b9\u5728\u5176\u5bb9\u5668\u5185\u7684\u504f\u79fb\nrange.endContainer \/\/ \u7ed3\u675f\u70b9\u6240\u5728\u7684\u5bb9\u5668(\u5143\u7d20)\nrange.endOffset \/\/ \u7ed3\u675f\u70b9\u5728\u5176\u5bb9\u5668\u5185\u7684\u504f\u79fb\n<\/code><\/pre>\n<p>\u8fd8\u6709\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u5c5e\u6027:<\/p>\n<pre><code class=\"language-javascript line-numbers\">range.commonAncestorContainer \/\/ \u9009\u62e9\u8303\u56f4\u7684\u5171\u540c\u7236\u5143\u7d20\n<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd4\u56de\u7684Range\u5bf9\u8c61\u662f\u53ef\u53d8\u5bf9\u8c61\u3002<\/p>\n<p>\u7b80\u5355\u6765\u8bf4\uff0c\u5982\u679c\u7528\u6237\u7684\u9009\u533a\u6539\u53d8\u4e86\uff0c\u90a3\u4e48Range\u5bf9\u8c61\u7684\u5185\u5bb9\u4e5f\u4f1a\u6539\u53d8\u3002\u56e0\u6b64\u8981\u8bb0\u5f55\u67d0\u4e00\u65f6\u523b\u7684Range\uff0c\u5c31\u8981\u8bb0\u5f55\u3002<\/p>\n<p>\u6b64\u5916\uff0cRange\u5bf9\u8c61\u8fd8\u5b9a\u4e49\u4e86\u5404\u79cd\u83b7\u53d6\u5185\u5bb9\u548c\u4fee\u6539\u5185\u5bb9\u7684\u51fd\u6570\uff0c\u8be6\u89c1<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/developer.mozilla.org\/zh-CN\/docs\/Web\/API\/Range\">\u6587\u6863<\/a>\uff0c\u8fd9\u91cc\u53ea\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u3002<\/p>\n<p>1\uff09 \u83b7\u5f97\u9009\u53d6\u7684\u5750\u6807\u8303\u56f4<\/p>\n<p>\u53ef\u4ee5\u83b7\u5f97\u5149\u6807\u5728\u7f51\u9875\u4e0a\u7684\u7cbe\u786e\u4f4d\u7f6e\uff0c\u83b7\u5f97\u5149\u6807\u7684\u4f4d\u7f6e\u6216\u8005\u9009\u533a\u7684\u77e9\u5f62\u8fb9\u6846\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code class=\"language-javascript line-numbers\">let rect = range.getBoundingClientRect();\n<\/code><\/pre>\n<p>rect\u5bf9\u8c61\u5305\u62ec\u7684\u5c5e\u6027\u5305\u62ec\u77e9\u5f62\u7684top\u3001left\u3001right\u3001bottom\u5750\u6807\u3002\u5982\u679c\u9009\u53d6\u662fcollapsed\u7684\u8bdd\uff0c\u8fd9\u56db\u4e2a\u5c5e\u6027\u5c31\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u5149\u6807\u7684\u4f4d\u7f6e\u3002<\/p>\n<p>2) \u4fdd\u5b58\u9009\u533a\u5e76\u6062\u590d<\/p>\n<p>\u5982\u679c\u5bf9\u9009\u62e9\u533a\u57df\u5185\u7684\u5143\u7d20\u8fdb\u884c\u4e86\u4fee\u6539\uff0c\u6bd4\u5982\u6dfb\u52a0\u65b0\u5143\u7d20\u3001\u6539\u53d8\u5143\u7d20\u7c7b\u578b\u7b49\u7b49\uff0c\u90a3\u4e48\u539f\u6765\u7684\u9009\u533a\u4f1a\u5931\u6548\u3002\u56e0\u6b64\u4e00\u4e2a\u6bd4\u8f83\u6709\u7528\u7684\u6280\u5de7\u5c31\u662f\u5728\u4fee\u6539\u5143\u7d20\u4e4b\u524d\uff0c\u5148\u4fdd\u5b58\u9009\u533aRange\uff0c\u5f85\u4fee\u6539\u5b8c\u6210\u540e\u518d\u6062\u590d\uff1a<\/p>\n<pre><code class=\"language-javascript line-numbers\">let selection = window.getSelection();\nlet range = selection.getRangeAt(0);\n\nlet startContainer = range.startContainer;\nlet startOffset = range.startOffset;\nlet endContainer = range.endContainer;\nlet endOffset = range.endOffset;\n\n\/\/ ......\n\nlet newRange = document.createRange(); \nnewRange.setStart(startContainer, startOffset);\nnewRange.setEnd(endContainer, endOffset);\n\nselection.removeAllRanges();\nselection.addRange(newRange);\n<\/code><\/pre>\n<p>\u4f46\u662f\uff0c\u6709\u4e9b\u64cd\u4f5c\u53ef\u80fd\u4f1a\u81ea\u52a8\u4fee\u6539\u9009\u533a\uff0c\u6240\u4ee5\u8981\u4e3a\u6062\u590d\u9009\u533a\u6dfb\u52a0\u5ef6\u8fdf\uff1a<\/p>\n<pre><code class=\"language-javascript line-numbers\">setTimeout(function(){\nselection.addRange(newRange);\n},  50);\n<\/code><\/pre>\n<h3>\u4e09\u3001 \u7f16\u8f91 DOM\uff0c\u4fee\u6539\u6837\u5f0f<\/h3>\n<p>\u5982\u679c\u6bb5\u843d\u4e2d\u662f\u4e00\u6bb5\u5373\u52a0\u7c97\u53c8\u503e\u659c\u7684\u6587\u5b57\u7b49\u8f83\u590d\u6742\u7684\u6837\u5f0f\uff0c\u9700\u8981\u4f7f\u7528document.execCommand\uff1a<\/p>\n<pre><code class=\"language-javascript line-numbers\">document.execCommand('bold'); \/\/ \u52a0\u7c97\u6240\u9009\ndocument.execCommand('italic'); \/\/ \u503e\u659c\u6240\u9009\ndocument.execCommand('underline'); \/\/ \u4e0b\u5212\u7ebf\u6240\u9009\ndocument.execCommand('createLink', true, 'https:\/\/indeex.club'); \/\/ \u4e3a\u6240\u9009\u6587\u5b57\u52a0\u94fe\u63a5\ndocument.execCommand('unlink'); \/\/ \u53d6\u6d88\u94fe\u63a5\ndocument.execCommand('formatBlock', true, 'h1');\ndocument.execCommand('formatBlock', true, 'p');\n<\/code><\/pre>\n<p>\u6d4f\u89c8\u5668\u8fd8\u63d0\u4f9b\u4e86copy\u3001cut\u548cpaste\u7b49\u65b9\u6cd5\uff0c\u8fd9\u91cc\u4e0d\u518d\u8d58\u8ff0\u3002<\/p>\n<h3>\u56db\u3001\u4e8b\u4ef6\u4fa6\u542c<\/h3>\n<p>\u9664\u4e86change\u6216keyup\u4e8b\u4ef6\uff0c\u62d6\u62fd\u8fd8\u8981\u4f7f\u7528mouseup\u4e8b\u4ef6\uff0c\u4f46\u662f\u90fd\u6bd4\u8f83\u9ebb\u70e6\u3002\u6240\u4ee5\u8981\u4f7f\u7528 Mutation Observer \u673a\u5236\uff0c\u7565\u3002<\/p>\n<h3>\u4e94\u3001\u517c\u5bb9<\/h3>\n<p>\u7136\u540e\u5c31\u662f\u4e0d\u540c\u6d4f\u89c8\u5668\u7684\u517c\u5bb9\u95ee\u9898\u4e86\uff0cummmm&#8230;..<\/p>\n<p>\u5148\u8fd9\u6837\u5427\u3002<\/p>\n<p>code enjoy!\ud83d\ude1c\ud83d\ude1c\ud83d\ude1c<\/p>\n<p>\u4f5c\u8005\uff1aindeex<\/p>\n<p>\u94fe\u63a5\uff1a<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/indeex.club\/\">https:\/\/indeex.club<\/a><\/p>\n<p>\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001contentEditable div\u7684contentEditable\u5c5e\u6027\u53ef\u4ee5\u8ba9div\u8fdb\u5165\u7f16\u8f91\u6a21<a href=\"https:\/\/blog.indeex.club\/index.php\/2020\/06\/01\/%e7%bc%96%e8%be%91%e5%99%a8%e5%9f%ba%e6%9c%ac%e6%80%9d%e8%b7%af\/\" class=\"read-more\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[4],"_links":{"self":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/198"}],"collection":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/comments?post=198"}],"version-history":[{"count":1,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/198\/revisions"}],"predecessor-version":[{"id":199,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/198\/revisions\/199"}],"wp:attachment":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/media?parent=198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/categories?post=198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/tags?post=198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}