Guide to swapping images on button click in HTML with dynamically changing image URLs retrieved from the server

I am a beginner in client-side scripting and new to Stack Overflow. I am looking for guidance on how to change an image within a div element upon clicking a button or anchor tag. Here is the code snippet I have written to achieve this:

$scope.captchaChange = function () {
    $http({
        method: "POST",
        url: 'http://localhost:8080/Project/captcha/captcha',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded'
        }
    }).success(function (response) {
        if (response.imgUrl.length > 0) {
            document.getElementById("captchaImg").src = response.imgUrl;
            document.getElementById("captchatext").value = response.imgToken;
        } else {
            alert('no captcha Image Available');
        }
    }).error(function (response) {
        //alert("response" + response)
        $scope.codeStatus = response || "Request failed";
        return false;
    });
}

Answer №1

If you need to replace the current image in a div with a new image from the server, you can achieve this by following these steps:

 $('#img-change-btn').click(function() {
    var path = response.imgUrl // Or any other path;
    $('#img-display-div img').attr('src', path)
                         .attr('alt', $('img', this).attr('title')); 
});

You can view the working code example here: http://jsfiddle.net/yV6e6/6/

Note: The solution includes some JQuery usage (.click, .empty, .append, etc), but if you prefer pure JavaScript, you can exclude JQuery functionalities.

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