Douglas Crockford: entityify & deentityify

Douglas Crockford: entityify & deentityify大神之字符与字符实体的相互转换方法

// & to &amp;if (!String.PRototype.entityify) { String.prototype.entityify = function () { return this.replace(/&/g, "&amp;"). replace(/</g, "&lt;"). replace(/>/g, "&gt;"). replace(/\"/g, "&quot;"); };}// &amp; to &if (!String.prototype.deentityify) { String.prototype.deentityify = function () { return this.replace(/&amp;/g, "&"). replace(/&lt;/g, "<"). replace(/&gt;/g, ">"). replace(/&quot;/g, "\""); };}var sourceStr = '<p>"a&b"</p>';var entityStr = sourceStr.entityify();console.log(entityStr); // &lt;p&gt;&quot;a&amp;b&quot;&lt;/p&gt; var deentityStr = entityStr.deentityify();console.log(deentityStr); // <p>"a&b"</p>