Escape HTML entity - Node.js String

Node.js examples for String:HTML String

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Description

Escape HTML entity

Demo Code


function v(obj) {
    if (obj) return obj;
    else return "";
}


String.prototype.trim = function() {
    return this.replace(/(^\s*)|(\s*$)/g, "");
};


HTML_ESCAPE=function(){
      var _this=this;
      this.hex=new Array('0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f');
      //from  ww  w. jav  a  2s .co  m
      
      this.escapeHTML=function(preescapeHtml)
        {
          var preescape="" + preescapeHtml;
          var escaped="";
          
          var i=0;
          var brEscape=true;
          var tagEscape=true;
          var others=true;
          var nbsp=true;
          for(i=0;i<preescape.length;i++)
          {
            var p=preescape.charAt(i);
            
            if(others) p=""+_this.escapeCharx(p);
            if(tagEscape) p=""+_this.escapeTags(p);
            if(brEscape) p=""+_this.escapeBR(p);
            if(nbsp) p=""+_this.escapeNBSP(p);
            
            escaped=escaped+p;
          }
          return escaped;
        };
        
        
      this.escapeBR=function (original)
      {
             var thechar=original.charCodeAt(0);
           
        switch(thechar) {
            case 10: return "<br/>"; break; //newline
            case '\r': break;
        }
        return original;  
      };  
    
      this.escapeNBSP=function (original)
      {
             var thechar=original.charCodeAt(0);
        switch(thechar) {
            case 32: return "&nbsp;"; break; //space
        }
        return original;  
      };
    
      this.escapeTags=function (original)
      {
             var thechar=original.charCodeAt(0);
        switch(thechar) {
            case 60:return "&lt;"; break; //<
            case 62:return "&gt;"; break; //>
            case 34:return "&quot;"; break; //"
        }
        return original;
      
      };
        
      this.escapeCharx=function (original)
      {        
            var found=true;
             var thechar=original.charCodeAt(0);
        switch(thechar) {
            case 38:return "&amp;"; break;
            case 198:return "&AElig;"; break;
            case 193:return "&Aacute;"; break;
            case 194:return "&Acirc;"; break; 
            case 192:return "&Agrave;"; break; 
            case 197:return "&Aring;"; break; 
            case 195:return "&Atilde;"; break; 
            case 196:return "&Auml;"; break; 
            case 199:return "&Ccedil;"; break; 
            case 208:return "&ETH;"; break;
            case 201:return "&Eacute;"; break; 
            case 202:return "&Ecirc;"; break; 
            case 200:return "&Egrave;"; break; 
            case 203:return "&Euml;"; break;
            case 205:return "&Iacute;"; break;
            case 206:return "&Icirc;"; break; 
            case 204:return "&Igrave;"; break; 
            case 207:return "&Iuml;"; break;
            case 209:return "&Ntilde;"; break; 
            case 211:return "&Oacute;"; break;
            case 212:return "&Ocirc;"; break; 
            case 210:return "&Ograve;"; break; 
            case 216:return "&Oslash;"; break; 
            case 213:return "&Otilde;"; break; 
            case 214:return "&Ouml;"; break;
            case 222:return "&THORN;"; break; 
            case 218:return "&Uacute;"; break; 
            case 219:return "&Ucirc;"; break; 
            case 217:return "&Ugrave;"; break; 
            case 220:return "&Uuml;"; break; 
            case 221:return "&Yacute;"; break;
            case 225:return "&aacute;"; break; 
            case 226:return "&acirc;"; break; 
            case 230:return "&aelig;"; break; 
            case 224:return "&agrave;"; break; 
            case 229:return "&aring;"; break; 
            case 227:return "&atilde;"; break; 
            case 228:return "&auml;"; break; 
            case 231:return "&ccedil;"; break; 
            case 233:return "&eacute;"; break;
            case 234:return "&ecirc;"; break; 
            case 232:return "&egrave;"; break; 
            case 240:return "&eth;"; break; 
            case 235:return "&euml;"; break; 
            case 237:return "&iacute;"; break; 
            case 238:return "&icirc;"; break; 
            case 236:return "&igrave;"; break; 
            case 239:return "&iuml;"; break; 
            case 241:return "&ntilde;"; break; 
            case 243:return "&oacute;"; break;
            case 244:return "&ocirc;"; break; 
            case 242:return "&ograve;"; break; 
            case 248:return "&oslash;"; break; 
            case 245:return "&otilde;"; break;
            case 246:return "&ouml;"; break; 
            case 223:return "&szlig;"; break; 
            case 254:return "&thorn;"; break; 
            case 250:return "&uacute;"; break; 
            case 251:return "&ucirc;"; break; 
            case 249:return "&ugrave;"; break; 
            case 252:return "&uuml;"; break; 
            case 253:return "&yacute;"; break; 
            case 255:return "&yuml;"; break;
            case 162:return "&cent;"; break; 
            default:
              found=false;
              break;
          }
          if(!found)
          {
            if(thechar>127) {
              var c=thechar;
              var a4=c%16;
              c=Math.floor(c/16); 
              var a3=c%16;
              c=Math.floor(c/16);
              var a2=c%16;
              c=Math.floor(c/16);
              var a1=c%16;
            //  alert(a1);
              return "&#x"+_this.hex[a1]+_this.hex[a2]+_this.hex[a3]+_this.hex[a4]+";";    
            }
            else
            {
              return original;
            }
          }  
      };
};

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