{"id":147,"date":"2013-05-23T21:51:38","date_gmt":"2013-05-23T13:51:38","guid":{"rendered":"http:\/\/www.zyuns.com\/?p=147"},"modified":"2015-02-15T21:00:22","modified_gmt":"2015-02-15T13:00:22","slug":"js-jie-qu-zi-fu-chang-du-an-zi-jie","status":"publish","type":"post","link":"https:\/\/www.siediyer.cn\/?p=147","title":{"rendered":"JS\u622a\u53d6\u5b57\u7b26\u957f\u5ea6\uff08\u6309\u5b57\u8282\uff09"},"content":{"rendered":"<pre class=\"wrap:true lang:default decode:true crayon-selected\">*\n * \u5904\u7406\u8fc7\u957f\u7684\u5b57\u7b26\u4e32\uff0c\u622a\u53d6\u5e76\u6dfb\u52a0\u7701\u7565\u53f7\n * \u6ce8\uff1a\u534a\u89d2\u957f\u5ea6\u4e3a1\uff0c\u5168\u89d2\u957f\u5ea6\u4e3a2\n *\n * pStr:\u5b57\u7b26\u4e32\n * pLen:\u622a\u53d6\u957f\u5ea6\n *\n * return: \u622a\u53d6\u540e\u7684\u5b57\u7b26\u4e32\n *\nfunction autoAddEllipsis(pStr, pLen) {\n\n    var _ret = cutString(pStr, pLen);\n    var _cutFlag = _ret.cutflag;\n    var _cutStringn = _ret.cutstring;\n\n    if (\"1\" == _cutFlag) {\n        return _cutStringn + \"...\";\n    } else {\n        return _cutStringn;\n    }\n}\n\n*\n * \u53d6\u5f97\u6307\u5b9a\u957f\u5ea6\u7684\u5b57\u7b26\u4e32\n * \u6ce8\uff1a\u534a\u89d2\u957f\u5ea6\u4e3a1\uff0c\u5168\u89d2\u957f\u5ea6\u4e3a2\n *\n * pStr:\u5b57\u7b26\u4e32\n * pLen:\u622a\u53d6\u957f\u5ea6\n *\n * return: \u622a\u53d6\u540e\u7684\u5b57\u7b26\u4e32\n *\nfunction cutString(pStr, pLen) {\n\n    \/\/ \u539f\u5b57\u7b26\u4e32\u957f\u5ea6\n    var _strLen = pStr.length;\n\n    var _tmpCode;\n\n    var _cutString;\n\n    \/\/ \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u8fd4\u56de\u7684\u5b57\u7b26\u4e32\u662f\u539f\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\n    var _cutFlag = \"1\";\n\n    var _lenCount = 0;\n\n    var _ret = false;\n\n    if (_strLen &lt;= pLen\/2) {\n        _cutString = pStr;\n        _ret = true;\n    }\n\n    if (!_ret) {\n        for (var i = 0; i &lt; _strLen ; i++ ) {\n            if (isFull(pStr.charAt(i))) {\n                _lenCount += 2;\n            } else {\n                _lenCount += 1;\n            }\n\n            if (_lenCount &gt; pLen) {\n                _cutString = pStr.substring(0, i);\n                _ret = true;\n                break;\n            } else if (_lenCount == pLen) {\n                _cutString = pStr.substring(0, i + 1);\n                _ret = true;\n                break;\n            }\n        }\n    }\n\n    if (!_ret) {\n        _cutString = pStr;\n        _ret = true;\n    }\n\n    if (_cutString.length == _strLen) {\n        _cutFlag = \"0\";\n    }\n\n    return {\"cutstring\":_cutString, \"cutflag\":_cutFlag};\n}\n\n*\n * \u5224\u65ad\u662f\u5426\u4e3a\u5168\u89d2\n *\n * pChar:\u957f\u5ea6\u4e3a1\u7684\u5b57\u7b26\u4e32\n * return: tbtrue:\u5168\u89d2\n *          false:\u534a\u89d2\n *\n\nfunction isFull (pChar) {\n  for (var i = 0; i &lt; pChar.strLen ; i++ ) {\n    if ((pChar.charCodeAt(i) &gt; 128)) {\n        return true;\n    } else {\n        return false;\n    }\n}\n}<\/pre>\n<p>&nbsp;<\/p>\n<p>\u7528\u4f8b\uff1a<br \/>\ntestStr = &#8220;\u6d4b\u8bd51\u5b57\u7b26\u4e32&#8221;;<br \/>\nautoAddEllipsis(testStr, 1); \/\/ &#8220;\u6d4b&#8230;&#8221;<br \/>\nautoAddEllipsis(testStr, 2); \/\/ &#8220;\u6d4b&#8230;&#8221;<br \/>\nautoAddEllipsis(testStr, 3); \/\/ &#8220;\u6d4b&#8230;&#8221;<br \/>\nautoAddEllipsis(testStr, 4); \/\/ &#8220;\u6d4b\u8bd5&#8230;&#8221;<br \/>\nautoAddEllipsis(testStr, 5); \/\/ &#8220;\u6d4b\u8bd51&#8230;&#8221;<br \/>\nautoAddEllipsis(testStr, 6); \/\/ &#8220;\u6d4b\u8bd51&#8230;&#8221;<br \/>\nautoAddEllipsis(testStr, 7); \/\/ &#8220;\u6d4b\u8bd51\u5b57&#8230;&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>* * \u5904\u7406\u8fc7\u957f\u7684\u5b57\u7b26\u4e32\uff0c\u622a\u53d6\u5e76\u6dfb\u52a0\u7701\u7565\u53f7 * \u6ce8\uff1a\u534a\u89d2\u957f\u5ea6\u4e3a1\uff0c\u5168\u89d2\u957f\u5ea6\u4e3a2 * * pStr:\u5b57\u7b26\u4e32 *  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-147","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=147"}],"version-history":[{"count":1,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/147\/revisions"}],"predecessor-version":[{"id":482,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/147\/revisions\/482"}],"wp:attachment":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}