{"id":1766,"date":"2019-01-04T13:27:00","date_gmt":"2019-01-04T05:27:00","guid":{"rendered":"http:\/\/www.imzouyang.com\/blog\/?p=1766"},"modified":"2020-10-28T22:46:47","modified_gmt":"2020-10-28T14:46:47","slug":"html%e5%85%83%e7%b4%a0%e7%9a%84%e6%8b%96%e6%8b%bd%e5%b1%9e%e6%80%a7draggable","status":"publish","type":"post","link":"http:\/\/www.imzouyang.com\/blog\/archives\/1766.html","title":{"rendered":"\u62d6\u62fdHTML\u5143\u7d20\u4e4bdraggable"},"content":{"rendered":"\n<p>\u4e00\u3001HTML \u65b0\u589e\u4e86\u4e00\u4e2a draggable \u5c5e\u6027\uff0c\u7ed9\u9700\u8981\u8fdb\u884c\u62d6\u653e\u7684\u5143\u7d20\u52a0\u4e0a\u5c5e\u6027draggable=&#8221;true&#8221; \u5c31\u53ef\u4ee5\u8ba9\u8be5\u5143\u7d20\u80fd\u591f\u88ab\u62d6\u62fd\u79fb\u52a8\u3002\u5e76\u4e14\u8fd8\u6709\u76f8\u5173\u62d6\u62fd\u7684\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5230\u88ab\u62d6\u62fd\u7684\u5143\u7d20\u4e0a\uff0c\u8fdb\u884c\u76d1\u542c\u3002\u793a\u4f8b\u53ca\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;div id=\"box\" draggable=\"true\" style=\"width: 100px;height: 100px;background-color: red;\">Box&lt;\/div>\n\u2026\u2026\n\/\/\u76d1\u542c\u62d6\u62fd\nwindow.onload = function(){\n    var oDiv = document.getElementById(\"box\");\n\n    \/\/\u76ee\u6807\u5143\u7d20\u7684\u62d6\u62fd\n    oDiv.ondragstart = function(){  \/\/\u62d6\u62fd\u524d\u6700\u5f00\u59cb\u89e6\u53d1\n        console.log(\"start...\");\n    }\n    oDiv.ondrag = function(){   \/\/\u62d6\u62fd\u524d\u3001\u62d6\u62fd\u7ed3\u675f \u4e4b\u95f4\uff0c\u8fde\u7eed\u89e6\u53d1\n        console.log(\"ondrag...\");\n    } \n    oDiv.ondragend = function(){    \/\/\u62d6\u62fd\u7ed3\u675f\u89e6\u53d1\n        console.log(\"ondrag...\");\n    }\n\n    \/\/\u62d6\u62fd\u52a8\u4f5c\n    oDiv.ondragenter = function(){  \/\/\u62d6\u62fd\u65f6 \u8fdb\u5165\u5230\u76ee\u6807\u5143\u7d20\u533a\u57df\u65f6\u89e6\u53d1\uff0c\u76f8\u5f53\u4e8e mouseover \u90a3\u6837\u3002\u6211\u8fd8\u53ef\u4ee5\u62d6\u62fd\u5176\u5b83\u53ef\u62d6\u62fd\u5143\u7d20\u8fdb\u5165\u5230\u8be5 oDiv \u5143\u7d20\u533a\u57df\uff0c\u4e5f\u4f1a\u89e6\u53d1\u7684\u3002\n        console.log(\"ondragenter...\");\n    }\n    oDiv.ondragover = function(e){  \/\/\u8fdb\u5165\u76ee\u6807\u5143\u7d20\u533a\u57df\u540e\uff0c\u79bb\u5f00\u5143\u7d20\u533a\u57df\u524d\uff0c\u6301\u7eed\u89e6\u53d1\uff0c\u5c31\u662f\u5728\u76ee\u6807\u5143\u7d20\u539f\u59cb\u4f4d\u7f6e\u533a\u57df\u5185\u62d6\u62fd\u65f6\u4f1a\u6301\u7eed\u89e6\u53d1\n        e.preventDefault(); \/\/\u8981\u8ba9 drop \u4e8b\u4ef6\u6709\u6548\u679c\uff0c\u987b\u5728\u8fd9\u4e2adragover\u5185\u6267\u884c\u963b\u6b62\u9ed8\u8ba4\u4e8b\u4ef6\n        console.log(\"ondragover...\");\n    }\n    oDiv.ondragleave = function(){  \/\/\u79bb\u5f00\u76ee\u6807\u5143\u7d20\u521d\u59cb\u533a\u57df\u89e6\u53d1\uff0c\u76f8\u5f53\u4e8e mouseout\n        console.log(\"ondragleave...\");\n    }\n    oDiv.ondrop = function(){  \/\/\u62d6\u62fd\u53ef\u62d6\u62fd\u7684\u5143\u7d20\uff0c\u628a\u8be5\u5143\u7d20\u62d6\u62fd\u8fdb oDiv \u5143\u7d20\u539f\u6765\u521d\u59cb\u4f4d\u7f6e\u533a\u57df\u5185\u65f6\uff0c\u518d\u91ca\u653e\u9f20\u6807\u5c31\u4f1a\u89e6\u53d1\u3002\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u62d6\u62fd\u4e0a\u4f20\u529f\u80fd\u3002\n        console.log(\"ondrop...\");\n    } \n}<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0a\u542b\u4e49\uff0c\u76f4\u63a5\u6d4b\u8bd5\u53ef\u80fd\u4f53\u4f1a\u66f4\u6df1\u3002<br>\u53e6\u5916\u62d6\u62fd\u4e8b\u4ef6\u7684 \u4e8b\u4ef6\u5bf9\u8c61 \u5185\uff0c\u8fd8\u6709\u4e00\u4e2a\u5c5e\u6027\uff1adataTransfer\u5bf9\u8c61<br>\u89e3\u51b3\u706b\u72d0\u4e0b\u4e0d\u80fd\u62d6\u62fd\uff1a\u5fc5\u987b\u8bbe\u7f6e\u4e00\u4e0b dataTransfer \u5bf9\u8c61\u7684 setData \u65b9\u6cd5\u624d\u53ef\u4ee5\u62d6\u62fd\uff0c\u6bd4\u5982 e.dataTransfer.setData(&#8220;ceshi&#8221;,&#8221;ceshi_value&#8221;)<\/p>\n\n\n\n<p>\u4e8c\u3001\u5b9e\u73b0\u62d6\u62fd\u4e0a\u4f20<\/p>\n\n\n\n<p>\u62d6\u62fd\u4e8b\u4ef6\u7684 \u4e8b\u4ef6\u5bf9\u8c61 \u5185\u7684 dataTransfer \u5c5e\u6027\uff0c\u5b83\u5185\u90e8\u8fd8\u6709\u5f88\u591a\u5c5e\u6027\uff08\u6bd4\u5982\u4e0a\u9762\u63d0\u5230\u7684 setData \u65b9\u6cd5\uff09\uff0c\u8fd9\u91cc\u4e0d\u4e00\u4e00\u8bb2\u89e3\u3002\u53ea\u8bf4\u4e00\u4e0b\uff0c\u6bd4\u8f83\u91cd\u8981\u7684 files \u5c5e\u6027\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u62d6\u62fd\u662f\u53ef\u4ee5\u5f53\u5c06\u6d4f\u89c8\u5668\u5916\u90e8\u7684\u6587\u4ef6\u62d6\u5230\u6d4f\u89c8\u5668\u5185\u7684\u90a3\u4e2a\u6307\u5b9a\u533a\u57df\u7684\uff08\u8bb0\u5f97\u5728ondrop \u5185\u963b\u6b62\u9ed8\u8ba4\u4e8b\u4ef6\uff0c\u4e0d\u7136\u6bd4\u5982\u62d6\u62fd\u56fe\u7247\u4f1a\u81ea\u52a8\u5728\u5f53\u524d\u6d4f\u89c8\u5668\u7a97\u53e3\u6253\u5f00\u4f60\u62d6\u8fdb\u6765\u7684\u56fe\u7247\uff09\uff0c\u5982\u679c\u6211\u4eec\u8981\u5224\u65ad\u62d6\u62fd\u7684\u662f\u4ec0\u4e48\u6587\u4ef6\u7c7b\u578b\uff0c\u5c31\u5f97\u7528 files\u3002\u6211\u4eec\u83b7\u53d6\u5230\u7684 files \u662f\u4e00\u4e2a filesList \u7684\u5217\u8868\uff0cfiles \u4e0b\u53c8\u6709\u4e2a type \u5c5e\u6027\uff0c\u8fd4\u56de\u6587\u4ef6\u7c7b\u578b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>oDiv.ondragover = function(e){\n    e.preventDefault(); \/\/\u8981\u8ba9 drop \u4e8b\u4ef6\u6709\u6548\u679c\n}\noDiv.ondrop = function(e){\n  e.preventDefault(); \/\/\u963b\u6b62\u6d4f\u89c8\u5668\u9ed8\u8ba4\n  var fs = ev.dataTransfer.files;  \/\/fs \u662f\u4e00\u4e2a\u5217\u8868\uff0c\u91cc\u9762\u662f\u62d6\u62fd\u7684\u6587\u4ef6\n  console.log( fs.length );\/\/\u8fd4\u56de\u62d6\u62fd\u6587\u4ef6\u7684\u4e2a\u6570\n  console.log( fs&#91;0] );\/\/\u62d6\u62fd\u7684\u7b2c\u4e00\u4e2a\u6587\u4ef6\n  console.log( fs&#91;0].type );\/\/\u8fd4\u56de\u62d6\u62fd\u6587\u4ef6\u7684type\u7c7b\u578b\n} <\/code><\/pre>\n\n\n\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u8ba4\u8bc6\u4e0b FileReader \u5bf9\u8c61\uff0c\u5b83\u7528\u4e8e \u00a0\u8bfb\u53d6\u6587\u4ef6\u4fe1\u606f\uff0c\u5c31\u53ef\u4ee5\u8fdb\u884c\u4e0a\u4f20\u554a\uff0c\u9884\u89c8\u554a\u7b49\u7b49\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    oDiv.ondragover = function(e){\n        e.preventDefault(); \/\/\u8981\u8ba9 drop \u4e8b\u4ef6\u6709\u6548\u679c\n    }\n\n    oDiv.ondrop = function(e){\n        e.preventDefault(); \/\/\u963b\u6b62\u6d4f\u89c8\u5668\u9ed8\u8ba4\n        console.log(123)\n        var fs = e.dataTransfer.files;  \/\/fs \u662f\u4e00\u4e2a\u5217\u8868\uff0c\u91cc\u9762\u662f\u62d6\u62fd\u7684\u6587\u4ef6\n        \n        var fd = new FileReader(); \/\/\u5b9e\u4f8b\u5316\u4e00\u4e2a FileReader \u5bf9\u8c61\n        fd.readAsDataURL( fs&#91;0] );   \/\/\u5b83\u4f1a\u628a\u8fd9\u4e2a\u6587\u4ef6\u8f6c\u6210\u6587\u4ef6\u4fe1\u606f\u3002\u8fd9\u4e2a\u6587\u4ef6\u4fe1\u606f\u5982\u679c\u8bfb\u53d6\u6210\u529f\uff0c\u90a3\u4e48\u5c31\u5728\u5b83\u4e0b\u9762\u5c31\u4f1a\u8d70\u4e00\u4e2aonload\u7684\u4e8b\u4ef6\n        fd.onload = function(){\n            alert(this.result);  \/\/\u6b64\u65f6\uff0c\u6211\u4eec\u4ece\u6d4f\u89c8\u5668\u5916\u90e8\u62d6\u5165\u4e00\u5f20\u56fe\u7247\u5230 oDiv\n\u4e0a\uff0c\u5c31\u4f1a\u5f39\u51fa\u56fe\u7247\u7684\u4fe1\u606f. \u63a5\u4e0b\u6765\uff0c\u5c31\u53ef\u4ee5\u628a\u8fd9\u4e2a\u6bd4\u5982\u56fe\u7247\u6587\u4ef6\u7684\u4fe1\u606f\u4e0a\u4f20\u540e\u53f0\u5b58\u50a8\u4e86\u3002\n        }\n    } <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001HTML \u65b0\u589e\u4e86\u4e00\u4e2a draggable \u5c5e\u6027\uff0c\u7ed9\u9700\u8981\u8fdb\u884c\u62d6\u653e\u7684\u5143\u7d20\u52a0\u4e0a\u5c5e\u6027draggable=&#038;#822 &hellip; <a href=\"http:\/\/www.imzouyang.com\/blog\/archives\/1766.html\" class=\"read-more\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text sr-only\">\u62d6\u62fdHTML\u5143\u7d20\u4e4bdraggable<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"aside","meta":[],"categories":[30],"tags":[],"_links":{"self":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/1766"}],"collection":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/comments?post=1766"}],"version-history":[{"count":4,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/1766\/revisions"}],"predecessor-version":[{"id":1827,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/1766\/revisions\/1827"}],"wp:attachment":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/media?parent=1766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/categories?post=1766"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/tags?post=1766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}