Background build HTML string to foreground string transcoding (HTML) processing

Knowledge is summed up, then write it down!

For example, the background HTML string is

var htmlstr= "background html string";

transcoding

var HTML format Code =decodehtml (HTMLSTR);

Just call the following JS method on the line

 functiondecodehtml (s) {varHtml_decode = {            "&lt;": "<",            "&gt;": ">",            "&amp;": "&",            "&nbsp;": "",            "&quot;": "\" ",            "&copy;": ""//Add More        }; varRegx_html_encode =/"|&|" | <|>| [\x00-\x20]| [\x7f-\xff]| [\u0100-\u2700]/G; varRegx_html_decode =/&\w+;|&# (\d+);G; varRegx_trim =/(^\s*) | (\s*$)/G; S= (s! = undefined)? S: ""; return(typeofs! = "string")?s:s.replace (Regx_html_decode,function($ A, $) {                          varc = html_decode[$0]; if(c = =undefined) {                              //Maybe is Entity number                              if(!isnan ($) ) {C= String.fromCharCode (($ = = 160)? 32: $); } Else{C= $; }                          }                          returnC;    }); };

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Background build HTML string to foreground string transcoding (HTML) processing