jquery - Expand this code to check if HTML comment in head includes a string -


the <head> contains: 

<!-- foo 1.2.3 author bill --> <!-- foo 1.2.3 author joe -->

i can far code may wrong:

var hc = $('head')[0].childnodes; (var = 0; < hc.length; i++) {      console.log(hc);  if (hc[i].nodetype == 8) { // comments have nodetype of 8  // need here value , verify 1 of comments includes "bill" } }

my own take on problem create simple function, coupled use of contents() retrieve child-nodes of given element. function:

function verifycomment(el, tofind) {     return el.nodetype === 8 && el.nodevalue && el.     nodevalue.indexof(tofind) > -1; }

and use (note i've used element other head, js fiddle doesn't really/easily offer access head element of document, changing selector should make work head well):

$('#fakehead').contents().each(function(){     console.log(verifycomment(this, 'bill')); });

js fiddle demo.

as alternative could, of course, extend prototype of comment node:

comment.prototype.hascontent = function (needle) {     return this.nodevalue.indexof(needle) > -1; };  $('#fakehead').contents().each(function(){     if (this.nodetype === 8 && this.hascontent('bill')){         console.log(this);     } });

js fiddle demo.

references:


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