jquery - Use JavaScript to change source of <iframe>

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jquery - Use JavaScript to change source of <iframe>

posted Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

jquery - Use JavaScript to change source of <iframe>

Here's the code:

<!DOCTYPE html>
 <html>
  <head>
   <script>
 var URL = prompt("Insert URL here", "http://www.example.com"); //Asks user for URL
   </script>
  </head>
  <body>
   <iframe onload="this.src=URL" height="610px" width="1320" id="window"></iframe>
  </body>
</html>

I'm trying to make the file load a URL into <iframe>, but when it finishes loading the URL, it reloads because of the onload attribute. Is there another attribute I should use? Thanks in advance.

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1 Reply

深蓝 · Answer 1 · 2021-10-23T21:33:56+0000

try this

<!DOCTYPE html>
<html>
    <head>
        <script>
            var URL = prompt("Insert URL here", "http://www.example.com"); //Asks user for URL
            if(URL) document.getElementById('window').src = URL;
        </script>
    </head>
    <body>
            <iframe height="610px" width="1320" id="window">
    </body>
</html>

the onload attribute you had on your iframe is fired when the iframe loads (and not when the page window loads), hence it setting the src again and then reloading the page into an endless loop.

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jquery - Use JavaScript to change source of <iframe>

jquery - Use JavaScript to change source of <iframe>

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