Creating a default parameter for a JavaScript AJAX request function

Utilizing XML AJAX to retrieve URLs for streaming media playback upon button click. To display a startup Tamil channel list by default, default parameter value must be set to 'Tamil'.

<button type="button" onclick="loadDoc('Tamil')">Tamil</button>
<button type="button" onclick="loadDoc('English')">English</button>

function loadDoc(language) {
  // display the channel list
}

Answer №1

It appears that you are interested in loading the list upon pageload using the specific language 'Tamil', am I correct?

To achieve this, you can load the list initially by calling the loadDoc() function with 'Tamil' as the argument after defining the function within the DOM ready event handler, like this:

function loadDoc(language) {
    //code to load the list based on language
}

document.addEventListener('DOMContentLoaded', function(event) {
    loadDoc('Tamil');
}, false);

If you wish to set a default value for the language parameter, you can do so by checking if it is undefined and assigning 'Tamil' as the default value:

function loadDoc(language) {
    if (typeof language === 'undefined) {
        language = 'Tamil';
    }
}

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