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How can I change the content of an element with childNodes (Javascript)? I tried something but it did not work.

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Zitat</title>
        <script type="text/javascript">
            var htmlNode = document.documentElement;
            var emNode = htmlNode.childNodes[1].childNodes[0].childNodes[1].childNodes[1];
            emNode.innerHtml = "BBB";
        </script>
    </head>
    <body>
        <ul>
            <li>Hello World</li>
            <li>AAA <em>DDD</em> CCC.</li>
        </ul>
    </body>
</html>

How can I change the content of an element with childNodes (Javascript)? I tried something but it did not work.

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Zitat</title>
        <script type="text/javascript">
            var htmlNode = document.documentElement;
            var emNode = htmlNode.childNodes[1].childNodes[0].childNodes[1].childNodes[1];
            emNode.innerHtml = "BBB";
        </script>
    </head>
    <body>
        <ul>
            <li>Hello World</li>
            <li>AAA <em>DDD</em> CCC.</li>
        </ul>
    </body>
</html>
  • javascript
  • child-nodes
Share Improve this question edited Feb 1, 2016 at 18:08 AsgarAli 2,2112 gold badges21 silver badges32 bronze badges asked Feb 1, 2016 at 17:41 Hans BaumHans Baum 4111 gold badge9 silver badges17 bronze badges 1
  • Is necessary traversing the DOM in the way of your example?, you could use clases or ids for fastest traversing – dexhering Commented Feb 1, 2016 at 17:57
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2 Answers 2

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<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Zitat</title>
        <script>
            document.addEventListener("DOMContentLoaded", function (event) {
                var arrAllListTags = document.querySelectorAll("li");
                arrAllListTags[1].childNodes[1].textContent = "BBB";
            });
        </script>
    </head>
    <body>
        <ul>
            <li>Hello World</li>
            <li>AAA <em>DDD</em> CCC.</li>
        </ul>
    </body>
</html>

First of all, the script tag should be placed AFTER the markup, otherwise it will be run before the actual html you are trying to modify is actually rendered. Second of all, I think your selectors are wrong. childNodes is a valid property of DOM objects, but you have a mistake in your chain. Thirdly, I would use document.querySelector to target elements, not a chain of childNodes. Finally, use innerHTML (not innerHtml) to set html content, or textContent if it is a Text node you are trying to update.

MDN Docs on innerHTML

本文标签： child nodesHow to change the content of an element with childNodes (Javascript)Stack Overflow

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