{"id":3479,"date":"2024-11-10T11:04:53","date_gmt":"2024-11-10T03:04:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3479\/"},"modified":"2024-11-10T11:04:53","modified_gmt":"2024-11-10T03:04:53","slug":"js%e5%a6%82%e4%bd%95%e6%b7%bb%e5%8a%a0index","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3479\/","title":{"rendered":"js\u5982\u4f55\u6dfb\u52a0index"},"content":{"rendered":"<blockquote><p>\n  \u6709\u4e09\u79cd\u65b9\u6cd5\u53ef\u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15\uff1a1. \u6570\u7ec4\u7d22\u5f15\uff08\u8bed\u6cd5\uff1aelement.index = index\uff09\uff1b2. dom \u7d22\u5f15\uff08\u8bed\u6cd5\uff1aelement.index = element.index + index\uff09\uff1b3. \u81ea\u5b9a\u4e49\u5c5e\u6027\uff08\u8bed\u6cd5\uff1aelement.setattribute(&#8216;index&#8217;, index)\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110813183040761.jpg\" class=\"aligncenter\" title=\"js\u5982\u4f55\u6dfb\u52a0index\u63d2\u56fe\" alt=\"js\u5982\u4f55\u6dfb\u52a0index\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 JavaScript \u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15\uff1a<\/p>\n<p><strong>1. \u6570\u7ec4\u7d22\u5f15<\/strong><\/p>\n<p>\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u662f\u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u4ece 0 \u5f00\u59cb\u3002\u8981\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u6dfb\u52a0\u7d22\u5f15\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>element.index = index;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u5c06\u7d22\u5f15 2 \u6dfb\u52a0\u5230\u5143\u7d20 myElement\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>myElement.index = 2;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>2. DOM \u7d22\u5f15<\/strong><\/p>\n<p>Node.prototype.index \u5c5e\u6027\u8fd4\u56de\u5143\u7d20\u7684 DOM \u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002\u8981\u901a\u8fc7 DOM \u7d22\u5f15\u6dfb\u52a0\u7d22\u5f15\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>element.index = element.index + index;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u5c06\u7d22\u5f15 5 \u6dfb\u52a0\u5230\u5143\u7d20 myElement\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>myElement.index = element.index + 5;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>3. \u81ea\u5b9a\u4e49\u5c5e\u6027<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u5c5e\u6027\u6765\u5b58\u50a8\u7d22\u5f15\u3002\u8981\u901a\u8fc7\u81ea\u5b9a\u4e49\u5c5e\u6027\u6dfb\u52a0\u7d22\u5f15\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>element.setAttribute('index', index);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u5c06\u7d22\u5f15 7 \u6dfb\u52a0\u5230\u5143\u7d20 myElement\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>element.setAttribute('index', 7);<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u6570\u7ec4\u7d22\u5f15\u548c DOM \u7d22\u5f15\u662f\u5143\u7d20\u5728\u5176\u5404\u81ea\u7684\u6570\u636e\u7ed3\u6784\u4e2d\u7684\u7d22\u5f15\uff0c\u800c\u81ea\u5b9a\u4e49\u5c5e\u6027\u7d22\u5f15\u662f\u5b58\u50a8\u5728\u5143\u7d20\u4e0a\u7684\u81ea\u5b9a\u4e49\u6570\u636e\u3002<\/li>\n<li>\u6570\u7ec4\u7d22\u5f15\u5728 JavaScript \u4e2d\u66f4\u5e38\u7528\uff0c\u800c DOM \u7d22\u5f15\u5728 HTML DOM \u64cd\u4f5c\u4e2d\u66f4\u5e38\u7528\u3002<\/li>\n<li>\u53ef\u4ee5\u901a\u8fc7 element.getAttribute(&#8216;index&#8217;) \u68c0\u7d22\u81ea\u5b9a\u4e49\u5c5e\u6027\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u6dfb\u52a0index\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u4e09\u79cd\u65b9\u6cd5\u53ef\u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15\uff1a1. \u6570\u7ec4\u7d22\u5f15\uff08\u8bed\u6cd5\uff1aelement.index = index\uff09\uff1b2. dom \u7d22\u5f15\uff08\u8bed\u6cd5\uff1aelement.index = element.index + index\uff09\uff1b3. \u81ea\u5b9a\u4e49\u5c5e\u6027\uff08\u8bed\u6cd5\uff1aelement.setattribute(&#8216;index&#8217;, index)\uff09\u3002 \u5982\u4f55\u4f7f\u7528 JavaScript \u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15 \u5728 JavaScript \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15\uff1a 1. \u6570\u7ec4\u7d22\u5f15 \u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u662f\u4e3a\u5143\u7d20\u6dfb\u52a0\u7d22\u5f15\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u4ece 0 \u5f00\u59cb\u3002\u8981\u901a\u8fc7\u6570\u7ec4\u7d22\u5f15\u6dfb\u52a0\u7d22\u5f15\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a element.index = index; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8981\u5c06\u7d22\u5f15 2 \u6dfb\u52a0\u5230\u5143\u7d20 myElement\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a myElement.index = 2; \u767b\u5f55\u540e\u590d\u5236 2. DOM \u7d22\u5f15 Node.prototype.index \u5c5e\u6027\u8fd4\u56de\u5143\u7d20\u7684 DOM \u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002\u8981\u901a\u8fc7 DOM \u7d22\u5f15\u6dfb\u52a0\u7d22\u5f15\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a element.index = element.index + index; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff0c\u8981\u5c06\u7d22\u5f15 5 \u6dfb\u52a0\u5230\u5143\u7d20 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3479","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3479"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3479\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}