js Html结构转字符串形式显示

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//Html结构转字符串形式显示 支持<br>换行 function ToHtmlString(htmlStr) {     return toTXT(htmlStr).replace(/\&lt\;br[\&ensp\;|\&emsp\;]*[\/]?\&gt\;|\r\n|\n/g, "<br/>"); } //Html结构转字符串形式显示 function toTXT(str) {     var RexStr = /\<|\>|\"|\'|\&|　| /g     str = str.replace(RexStr,     function (MatchStr) {         switch (MatchStr) {             case "<":                 return "&lt;";                 break;             case ">":                 return "&gt;";                 break;             case "\"":                 return "&quot;";                 break;             case "'":                 return "&#39;";                 break;             case "&":                 return "&amp;";                 break;             case " ":                 return "&ensp;";                 break;             case "　":                 return "&emsp;";                 break;             default:                 break;         }     }     )     return str; }