Javascript - check if div contains a word?

Question

How can I check if a div contains a certain word?

var divs= document.getElementsByTagName('div');
for (var i = 0, len = divs.length; i < len; ++i) {

    if (divs[i].text = '*word*'){
    //do somthing
}
}

doesn't work.

Connect

Answer 1

use the indexOf function

if(divs[i].innerHTML.indexOf("word") !== -1) {
    // something
}

Miscreant

Replacing // something with divs[i].style.background = "red"; still highlights the entire page. How to get a reference for the div containing "word"? Granted, the question doesn't ask for that depth but for completion/curiosity it would be interesting. – Algicide

Answer 2

Use includes():

node.textContent.includes('Some text');

Cooler

includes is not yet stable. poorly supported – Ambrosio

@Fred Randall It looks well supported here: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… – Capitulary

Answer 3

if (document.getElementById('divId').innerHTML.indexOf("word") != -1) { }

Dreeda

Answer 4

Try the String.indexOf() function: if (divs[i].text.indexOf('word') != -1) {

Henderson

Answer 5

You have to use a comparison operator not assign a variable.

if (divs[i].text == '*word*'){

I would recommend to use indexOf.

if (divs[i].text.indexOf('*word*') != -1){

Michealmicheil

Answer 6

In addition to what others said about using .indexOf() function, I'd like to say .text is not a div node property. User .innerHTML

if (divs[i].innerHTML.indexOf('word') > -1){}

Stilton

that will match HTML tag content too (i.e. tag names and attribute names and values). – Docent

It wasn't specified what type of content he was looking for. – Stilton

I might be wrong, but I think it's pretty clear the OP was looking to match text content, not markup. – Docent

Answer 7

Gosh, so many answers!

To get just the text of an element, the simple way is to use textContent or, were not supported, innerText. All browsers in use support one or the other (maybe both). You can also use a regular expression (indexOf works too, a RegExp is just an option) so:

var re = new RegExp('*' + word + '*');

if (re.test(div[i].innerText || div[i].textContent)) {
  // div[i] contains /*word*/
} 

A more robust solution would be like:

function getText(el) {
  if (typeof el.textContent == 'string') {
    return el.textContent;
  }
  if (typeof el.innerText == 'string') {
    return el.innerText;
  }
}

var re = new RegExp('*' + word + '*');

if (re.test(getText(div[i]))) {
  // div[i] contains /*word*/
} 

Docent

Answer 8

html :

<div id="ok">Hello world</div>

javascript :

var ok;

ok = document.getElementById("ok").innerHTML

if (ok.includes("world")) {
  document.getElementById("ok").innerHTML = "its working";
}

Beneath

Welcome to SO. Please take the time to explain your answer rather than just posting code. Especially since this is an old question with other answers, it's important to state why yours is different or improves on the others. – Contracted

Answer 9

use regexp:

if ( divs[i].textContent.match ( /\bword\b/ ) ){
    //do something
}

@RobG remind me so

if ( divs[i].innerHTML.match ( /\bword\b/ ) ){
    //do something
}

=3=

Equisetum

Will not work in browsers that don't support the W3C DOM textContent property. – Docent

Also, regex is slower and takes much more processing compared to indexOf – Shows

Answer 10

<ul class="single-headlines">
        <li>Fixed Shipping Sek 29</li>
        <li>44/5 Trustpilot</li>
        <li>Fast Delivery</li>
    </ul>

<script>
jQuery(".single-headlines > li:first").text(function () {
    return jQuery(this).text().replace("Fixed Shipping Sek 29", "Fast fraktkostnad SEK 29"); 
});
jQuery(".single-headlines > li:nth-child(3)").text(function () {
    return jQuery(this).text().replace("Fast Delivery", "Snabb leverans"); 
});
</script>

By selector Find the text which have to replace. text() return the selected text element replace() change the text.

Reinwald