{"id":76,"date":"2020-12-24T20:20:18","date_gmt":"2020-12-24T12:20:18","guid":{"rendered":"http:\/\/blog.ppdd.vip\/?p=76"},"modified":"2020-12-24T20:20:18","modified_gmt":"2020-12-24T12:20:18","slug":"%e7%bd%91%e9%a1%b5%e5%ad%97%e4%bd%93%e5%8d%95%e4%bd%8dpx%e3%80%81em%e3%80%81%e3%80%81rem%e3%80%81pt%e3%80%81vm%e3%80%81vh%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/blog.ppdd.vip\/index.php\/2020\/12\/24\/%e7%bd%91%e9%a1%b5%e5%ad%97%e4%bd%93%e5%8d%95%e4%bd%8dpx%e3%80%81em%e3%80%81%e3%80%81rem%e3%80%81pt%e3%80%81vm%e3%80%81vh%e4%bb%8b%e7%bb%8d\/","title":{"rendered":"\u7f51\u9875\u5b57\u4f53\u5355\u4f4dpx\u3001em\u3001%\u3001rem\u3001pt\u3001vm\u3001vh\u4ecb\u7ecd"},"content":{"rendered":"\n

\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u5728\u7f16\u5199\u7f51\u9875\u4e2d\u53ef\u80fd\u4f1a\u7528\u5230\u7684\u5b57\u4f53\u5355\u4f4d<\/h1>\n\n\n\n

\u7f51\u9875\u4e2d\u5b9a\u4e49\u5b57\u4f53\u65f6\u53ef\u80fd\u4f1a\u7528\u5230\u7684\u5b57\u4f53\u5355\u4f4d\uff1apx\u3001em\u3001%\u3001rem\u3001pt\u3001vm\u3001vh \u7b49\u3002<\/p>\n\n\n\n

1. \u5b57\u4f53\u5355\u4f4d<\/h2>\n\n\n\n

1.1 px<\/h3>\n\n\n\n

px\u662fpixel\u7f29\u5199\uff0c\u662f\u57fa\u4e8e\u50cf\u7d20\u7684\u5355\u4f4d\uff08\u5c4f\u5e55\u4e0a\u663e\u793a\u6570\u636e\u7684\u6700\u57fa\u672c\u7684\u70b9\uff09\u3002\u7528\u50cf\u7d20\u5b9a\u4e49\u7684\u7684\u6587\u5b57\u3001\u56fe\u7247\u7b49\u4f1a\u968f\u5c4f\u5e55\u7684\u5206\u8fa8\u7387\u53d8\u5316\u800c\u53d8\u5316\u3002\u5982\u679c\u5728\u5b9a\u4e49\u5b57\u4f53\u5927\u5c0f\u65f6\uff0c\u4f7f\u7528px\u4f5c\u4e3a\u5355\u4f4d\uff0c\u5206\u8fa8\u7387\u8c03\u9ad8\uff0c\u5b9e\u9645\u770b\u5230\u7684\u6587\u5b57\u5c31\u53d8\u201c\u5c0f\u201d\u3002<\/p>\n\n\n\n

1.2 em<\/h3>\n\n\n\n

em\u662f\u4e00\u4e2a\u76f8\u5bf9\u957f\u5ea6\u5355\u4f4d\uff0c\u6700\u521d\u662f\u6307\u5b57\u6bcdM\u7684\u5bbd\u5ea6\uff0c\u6545\u540dem\u3002\u73b0\u6307\u7684\u662f\u5b57\u7b26\u5bbd\u5ea6\u7684\u500d\u6570\uff0c\u7528\u6cd5\u7c7b\u4f3c\u767e\u5206\u6bd4\uff0c\u5982\uff1a0.8em\uff0c1.2em\uff0c2em\u7b49\u3002\u901a\u5e381em=16px\uff08\u4e00\u822c\u6d4f\u89c8\u5668\u9ed8\u8ba4\u7684\u5b57\u4f53\u5927\u5c0f\u4e3a16px\uff09\u3002
\u6ce8\uff1a\u5f53\u7528\u4e8e\u6307\u5b9a\u5b57\u4f53\u5927\u5c0f\u65f6\uff0cem\u5355\u4f4d\u662f\u6307\u7236\u5143\u7d20\u7684\u5b57\u4f53\u5927\u5c0f<\/strong><\/p>\n\n\n\n

1.3 %<\/h3>\n\n\n\n

\u767e\u5206\u4e0e\u201cem\u201d\u7c7b\u4f3c\uff0c1em=100%\u3002\u5f53\u524d\u7684\u5b57\u4f53\u5927\u5c0f\u7b49\u4e8e100%,\u5b57\u4f53\u5927\u5c0f\u4e5f\u662f\u53d7\u7236\u7c7b\u5f71\u54cd\u3002<\/p>\n\n\n\n

1.4 rem<\/h3>\n\n\n\n

rem\u662fCSS3\u65b0\u589e\u7684\u4e00\u4e2a\u76f8\u5bf9\u957f\u5ea6\u5355\u4f4d\uff0c\u53ea\u76f8\u5bf9\u6839\u76ee\u5f55\u5373HTML\u5143\u7d20\u3002\u6240\u4ee5\u53ef\u4ee5\u5728html\u6807\u7b7e\u4e0a\u8bbe\u7f6e\u5b57\u4f53\u5927\u5c0f\u4e3a\u6807\u51c6\uff0c\u6587\u6863\u4e2d\u7684\u5b57\u4f53\u5927\u5c0f\u90fd\u4f1a\u4ee5\u6b64\u4e3a\u53c2\u7167\u3002
\u5982\uff1a<\/p>\n\n\n\n

html{font-size:62.5%; \/* 10\u00f716=62.5% *\/}body{font-size:12px;font-size:1.2rem ; }p{font-size:14px;font-size:1.4rem;}<\/pre>\n\n\n\n
\u517c\u5bb9\u6027\uff1a<\/strong>IE9+\uff0cFirefox\u3001Chrome\u3001Safari\u3001Opera \u7684\u4e3b\u6d41\u7248\u672c\u90fd\u652f\u6301\uff0c\u4e3a\u4e86\u517c\u5bb9\u4e0d\u652f\u6301 rem \u7684\u6d4f\u89c8\u5668\uff0c\u6211\u4eec\u9700\u8981\u5728 rem \u524d\u9762\u5199\u4e0a\u5bf9\u5e94\u7684 px \u503c\uff0c\u8fd9\u6837\u4e0d\u652f\u6301\u7684\u6d4f\u89c8\u5668\u53ef\u4ee5\u4f18\u96c5\u964d\u7ea7\u3002<\/p>\n\n\n\n
1.5 pt<\/h3>\n\n\n\n
PT\u662fpoint(\u78c5)\u7f29\u5199\uff0c\u662f\u4e00\u79cd\u56fa\u5b9a\u957f\u5ea6\u7684\u5ea6\u91cf\u5355\u4f4d,\u5927\u5c0f\u4e3a1\/72\u82f1\u5bf8\uff0896dpi\uff09\u3002\u5982\u679c\u5728web\u4e0a\u4f7f\u7528pt\u505a\u5355\u4f4d\u7684\u6587\u5b57\uff0c\u5b57\u4f53\u7684\u5927\u5c0f\u5728\u4e0d\u540c\u5c4f\u5e55\u4e0b\u4e00\u6837\uff08DPI\u7cbe\u5ea6\u4e00\u6837\uff09\uff0c\u4f46\u5728Word\u4e2d\u4f7f\u7528pt\u76f8\u5f53\u65b9\u4fbf\u3002\u56e0\u4e3a\u4f7f\u7528Word\u4e3b\u8981\u76ee\u7684\u90fd\u4e0d\u662f\u4e3a\u4e86\u5c4f\u5e55\u6d4f\u89c8\uff0c\u800c\u662f\u8f93\u51fa\u6253\u5370\u3002\u5f53\u6253\u5370\u5230\u5b9e\u4f53\u65f6\uff0cpt\u4f5c\u4e3a\u4e00\u4e2a\u81ea\u7136\u957f\u5ea6\u5355\u4f4d\u5c31\u65b9\u4fbf\u5b9e\u7528\u4e86\u3002<\/p>\n\n\n\n
pt \u76f8\u5173\u516c\u5f0f\uff1a1in = 2.54cm = 25.4 mm = 72pt = 6pcpx = pt * DPI \/ 72\uff08\u4e00\u822c\u7535\u8111\u5c4f\u5e55\u7684\u6253\u5370\u7cbe\u5ea6\u662f96dpi\uff09<\/pre>\n\n\n\n
\u6ce8\uff1a<\/strong>\u7528\u5728\u5c4f\u5e55\u6d4f\u89c8\uff08\u5c4f\u5e55\u6548\u679c\uff09\u65f6\uff0cpt\u548cpx\u90fd\u4f1a\u968f\u5c4f\u5e55\u5206\u8fa8\u7387\u7684\u53d8\u5316\u800c\u53d8\u5316\u3002\u7528\u5728\u6253\u5370\uff08\u6253\u5370\u6548\u679c\uff09\u65f6\uff0c\u4f7f\u7528pt\u5728\u4e0d\u540c\u7684\u5c4f\u5e55\u5206\u8fa8\u7387\u6216\u4e0d\u540c\u7684DPI\u7cbe\u5ea6\u65f6\u663e\u793a\u5927\u5c0f\u4e00\u6837\uff0c\u53ea\u662fDPI\u7cbe\u5ea6\u8d8a\u9ad8\u7684\u8d8a\u6e05\u6670\u3002<\/p>\n\n\n\n
1.6 vw \/ vh<\/h3>\n\n\n\n
vw \u76f8\u5bf9\u4e8e\u89c6\u533a\u7684\u5bbd\u5ea6\uff1a\u89c6\u533a\u5bbd\u5ea6\u662f100vw\u3002
vh \u76f8\u5bf9\u4e8e\u89c6\u533a\u7684\u9ad8\u5ea6\uff1a\u89c6\u533a\u5bbd\u5ea6\u662f100vh\u3002
\u6ce8\uff1a<\/strong>\u89c6\u533a\u201d\u6240\u6307\u4e3a\u6d4f\u89c8\u5668\u5185\u90e8\u7684\u53ef\u89c6\u533a\u57df\u5927\u5c0f\uff0c\u5373window.innerWidth\/window.innerHeight\u5927\u5c0f\uff0c\u4e0d\u5305\u542b\u4efb\u52a1\u680f\u6807\u9898\u680f\u4ee5\u53ca\u5e95\u90e8\u5de5\u5177\u680f\u7684\u6d4f\u89c8\u5668\u533a\u57df\u5927\u5c0f\u3002\u90e8\u5206\u6d4f\u89c8\u5668\u53ef\u80fd\u4e0d\u652f\u6301\u8be5\u5ea6\u91cf\u5355\u4f4d\u3002<\/p>\n\n\n\n
1.7 \u5176\u5b83\u5b57\u4f53\u5355\u4f4d<\/h3>\n\n\n\n
1\uff0ein:\u82f1\u5bf8\uff1b
2\uff0ecm:\u5398\u7c73\uff1b
3\uff0emm:\u6beb\u7c73\uff1b
4\uff0epc:pica\uff0c\u5927\u7ea612pt\uff0c1\/6\u82f1\u5bf8\uff1b
5\uff0eex\uff1a\u53d6\u5f53\u524d\u4f5c\u7528\u6548\u679c\u7684\u5b57\u4f53\u7684x\u7684\u9ad8\u5ea6\uff0c\u5728\u65e0\u6cd5\u786e\u5b9ax\u9ad8\u5ea6\u7684\u60c5\u51b5\u4e0b\u4ee50.5em\u8ba1\u7b97\uff08\u90e8\u5206\u6d4f\u89c8\u5668\u652f\u6301\uff0c\u7528\u7684\u8f83\u5c11\u5c31\u4e0d\u8be6\u8ff0\u4e86\uff09\uff1b
6\uff0ech:\u4ee5\u8282\u70b9\u6240\u4f7f\u7528\u5b57\u4f53\u4e2d\u7684\u201c0\u201d\uff08\u96f6\uff09\u5b57\u7b26\u4e3a\u57fa\u51c6\uff0c\u627e\u4e0d\u5230\u65f6\u4e3a0.5em\uff08\u90e8\u5206\u6d4f\u89c8\u5668\u652f\u6301\uff0c\u7528\u7684\u8f83\u5c11\u5c31\u4e0d\u8be6\u8ff0\u4e86\uff09\uff1b<\/p>\n\n\n\n
2. \u5b57\u4f53\u5355\u4f4d\u4f7f\u7528\u5efa\u8bae<\/h2>\n\n\n\n
1\uff0e\u5728\u7f51\u9875\u5f00\u53d1\u65f6\u5efa\u8bae\u4f7f\u7528px\u3001rem\u3001em\u5b57\u4f53\u5355\u4f4d\uff0c\u4e00\u822c\u6d4f\u89c8\u5668\u9ed8\u8ba4\u5b57\u4f53\u5927\u5c0f\u662f16px\uff0c\u53ef\u4ee5\u5148\u8ba9\u6839\u5143\u7d20html\u4e3a10px\uff0c\u5982\uff1ahtml{font-size:62.5%;}\uff0c\u7136\u540e\u4f7f\u7528em,\u6216rem\u6765\u8bbe\u7f6e\u4e2a\u6807\u7b7e\u5143\u7d20\u7684\u5b57\u4f53\u5927\u5c0f\uff1b
2\uff0e\u5982\u679c\u662f\u9700\u8981\u6253\u5370\u7684\u6587\u6863\u5c31\u9700\u8981\u4f7f\u7528pt\u6765\u4f5c\u4e3a\u5b57\u4f53\u5355\u4f4d\uff0c\u5b9e\u9645\u7684\u6253\u5370\u5b57\u4f53\u6e05\u6670\u5ea6\u4f1a\u6839\u636eDPI\/PPI\uff08\u6253\u5370\u7cbe\u5ea6\uff09\u53d8\u5316\u3002<\/p>\n\n\n\n
3. \u76f8\u5173\u8bcd\u6c47<\/h2>\n\n\n\n
3.1 \u5c4f\u5e55\u5206\u8fa8\u7387<\/h3>\n\n\n\n
\u5c4f\u5e55\u5206\u8fa8\u7387\u662f\u6307\u5c4f\u5e55\u663e\u793a\u7684\u5206\u8fa8\u7387\u3002\u663e\u793a\u5206\u8fa8\u7387\u5c31\u662f\u5c4f\u5e55\u4e0a\u663e\u793a\u7684\u50cf\u7d20\u4e2a\u6570\uff0c\u5206\u8fa8\u7387160\u00d7128\u7684\u610f\u601d\u662f\u6c34\u5e73\u65b9\u5411\u542b\u6709\u50cf\u7d20\u6570\u4e3a160\u4e2a\uff0c\u5782\u76f4\u65b9\u5411\u50cf\u7d20\u6570128\u4e2a\u3002\u5c4f\u5e55\u5c3a\u5bf8\u4e00\u6837\u7684\u60c5\u51b5\u4e0b\uff0c\u5206\u8fa8\u7387\u8d8a\u9ad8\uff0c\u663e\u793a\u6548\u679c\u5c31\u8d8a\u7cbe\u7ec6\u548c\u7ec6\u817b\u3002<\/p>\n\n\n\n
3.2 DPI\/PPI pixel\uff08dot\uff09per inch<\/h3>\n\n\n\n
DPI\u5373\u6bcf\u82f1\u5bf8\u70b9\u6570\uff0c\u662f\u4e00\u4e2a\u91cf\u5ea6\u5355\u4f4d\uff0c\u7528\u4e8e\u70b9\u9635\u6570\u7801\u5f71\u50cf\uff0c\u6307\u6bcf\u4e00\u82f1\u5bf8\u957f\u5ea6\u4e2d\uff0c\u53d6\u6837\u3001\u53ef\u663e\u793a\u6216\u8f93\u51fa\u70b9\u7684\u6570\u76ee\u3002DPI\u662f\u6253\u5370\u673a\u3001\u9f20\u6807\u7b49\u8bbe\u5907\u5206\u8fa8\u7387\u7684\u5ea6\u91cf\u5355\u4f4d\u3002\u662f\u8861\u91cf\u6253\u5370\u673a\u6253\u5370\u7cbe\u5ea6\u7684\u4e3b\u8981\u53c2\u6570\u4e4b\u4e00\uff0c\u4e00\u822c\u6765\u8bf4\uff0cDPI\u503c\u8d8a\u9ad8\uff0c\u8868\u660e\u6253\u5370\u673a\u7684\u6253\u5370\u7cbe\u5ea6\u8d8a\u9ad8\u3002
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