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How get <body> element from the html which one have as a string

Answer 1

+1 A:

In case of an error, you could pass the entire HTML string to jQuery to build an internal representation of it:

var bodyHtml = $(entirePageHTML).find('body').html();

or

var errorMessage = $(entirePageHTML).find('body h1').text();

David Hedlund 2010-05-18 12:24:11

it was my first idea also, but $(entirePageHTML).find('body') returns an empty jQuery object and $(entirePageHTML).find('body').html() returns null.

Oleg 2010-05-18 12:31:56

Answer 2

+2 A:

Another way to do this, without jQuery:

function getStupidErrorMessage(str) {
  var bodyTags = str.match(/<\/*body[^>]*>/gim);
  // returns an array
  // bodyTags[0] is body open, bodyTags[1] is body close
  // unless someone output the markup backwards :)
  bodyContents = str.slice(bodyTags[0].length,-(bodyTags[1].length));
  return bodyContents; // use as innerHTML of <body> 
}

If you need the attributes of the BODY tag, parse those as well.

Robusto 2010-05-18 12:34:57

Thank you for advice. The idea is good, but `bodyTags[0].length` and `bodyTags[1].length` can not by used in `str.slice`. They produce wrong sub-string. `bodyTags.lastIndex` is OK as the last parameter of `str.slice`, but I don't yet found the correct value for the first one.

Oleg 2010-05-18 12:52:17

OK! data.responseText.slice(str.indexOf(bodyTags[0]),bodyTags.lastIndex) work!

Oleg 2010-05-18 12:58:12

@Oleg: Glad it works for you, but it seems to me that str.indexOf(bodyTags[0]) would just return 0. So would you not be getting the contents *including* the open <body> tag? I thought you didn't want that.

Robusto 2010-05-18 13:07:57

@Robusto: `str.match(/<\/*body[^>]*>/gim)` on my test string `str` produce array where `bodyTags[0]` is `'<body bgcolor="white">'` and `bodyTags[1]` is `'</body>'`. So `str.indexOf(bodyTags[0]) + bodyTags[0].length` gives me the index of contain after `<body bgcolor="white">` inside of my `str` and `bodyTags.lastIndex` is the same as `str.lastIndexOf(bodyTags[0])` or `str.lastIndexOf('</body>')`. So it works. Now I have two version which works. I choosed `exec` version of Sean Kinsey because it case insensitive and produce body content in one statement. Nevertheless thank you very much.

Oleg 2010-05-18 13:35:56

Answer 3

+2 A:

And the must-have non-jQuery answer:

 var bodyHtml = /<body.*?>([\s\S]*)<\/body>/.exec(entirePageHTML)[1];

This will return only whats inside the body tags.

UPDATE this accepts the attributes set on the body tag

Sean Kinsey 2010-05-18 12:37:29

Thank you for the advice, but I receive only exception in the first and in the last version of this exprestion

Oleg 2010-05-18 12:49:03

Take a closer look at the `body` tag of the response string. Your pattern will not match the opening tag.

patrick dw 2010-05-18 12:50:23

Thanks, it has been fixed.

Sean Kinsey 2010-05-18 12:57:04

Thank you! It works now!

Oleg 2010-05-18 13:07:01

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How get <body> element from the html which one have as a string

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