I am trying to get a code for a webpage using javascript. But I only want to return lines that include the word “array” How can I remove all lines that do not include “array?” I can’t find anything online and my skills are very basic.
“I type this sentence because it says the post is mostly a code, and it still says the same so I’m just extending this.”
function DOMtoString(document_root) {
var sourcecode = '',
node = document_root.firstChild;
while (node) {
switch (node.nodeType) {
case Node.ELEMENT_NODE:
sourcecode += node.outerHTML;
break;
case Node.TEXT_NODE:
sourcecode += node.nodeValue;
break;
case Node.CDATA_SECTION_NODE:
sourcecode += '<![CDATA[' + node.nodeValue + ']]>';
break;
case Node.COMMENT_NODE:
sourcecode += '<!--' + node.nodeValue + '-->';
break;
case Node.DOCUMENT_TYPE_NODE:
// (X)HTML documents are identified by public identifiers
sourcecode += "<!DOCTYPE " + node.name + (node.publicId ? ' PUBLIC "' + node.publicId + '"' : '') + (!node.publicId && node.systemId ? ' SYSTEM' : '') + (node.systemId ? ' "' + node.systemId + '"' : '') + '>n';
break;
}
node = node.nextSibling;
}
var public = sourcecode.substring(
sourcecode.lastIndexOf("'[[") + 1,
sourcecode.lastIndexOf("]]';")
);
var matematika = sourcecode.substring(
sourcecode.lastIndexOf("var arraypaginascopia;") + 1,
sourcecode.lastIndexOf("var rellenado;")
);
var test = ("testovaci zprava");
var test2 = ("testovaci zprava druha");
var fail = ("Internal Error");
//arrayrespuestas
var currenturl = document.URL;
var url = currenturl.includes("www.liveworksheets.com/workbooks")
//return url;
if (url == true){
return matematika;
} else {
return public;
}
For example: This is an example This is an example This is an example This is a banana This is an example This is an example This is a banana The result should be: This is a banana This is a banana
Answer
In your question, you asked for the word array, but I’ll use your example banana for the code.
const regex = /.*banana.*/gm;
// (.*) matches any character before and after the search string 'banana';
// The g flag is to match all occurrences and;
// The m flag is for a multi-line string
const str = `This is an example
This is an example
This is an example
This is a banana
This is an example
This is an example
This is a banana`;
console.log(str.match(regex));