jQuery/JavaScript to replace broken images

Question

I have a web page that includes a bunch of images. Sometimes the image isn\'t available, so a broken image is displayed in the client\'s browser.

How do I use jQuery

Answer 1

Pure JS. My task was: if image 'bl-once.png' is empty -> insert the first one (that hasn't 404 status) image from array list (in current dir):

Maybe it needs to be improved, but:

var srcToInsertArr = ['empty1.png', 'empty2.png', 'needed.png', 'notActual.png']; // try to insert one by one img from this array
    var path;
    var imgNotFounded = true; // to mark when success

    var replaceEmptyImage = {
        insertImg: function (elem) {

            if (srcToInsertArr.length == 0) { // if there are no more src to try return
                return "no-image.png";
            }
            if(!/undefined/.test(elem.src)) { // remember path
                path = elem.src.split("/").slice(0, -1).join("/"); // "http://localhost:63342/GetImage"
            }
            var url = path + "/" + srcToInsertArr[0];

            srcToInsertArr.splice(0, 1); // tried 1 src

            
                if(imgNotFounded){ // while not success
                    replaceEmptyImage.getImg(url, path, elem); // CALL GET IMAGE
                }
            

        },
        getImg: function (src, path, elem) { // GET IMAGE

            if (src && path && elem) { // src = "http://localhost:63342/GetImage/needed.png"
                
                var pathArr = src.split("/"); // ["http:", "", "localhost:63342", "GetImage", "needed.png"]
                var name = pathArr[pathArr.length - 1]; // "needed.png"

                xhr = new XMLHttpRequest();
                xhr.open('GET', src, true);
                xhr.send();

                xhr.onreadystatechange = function () {

                    if (xhr.status == 200) {
                        elem.src = src; // insert correct src
                        imgNotFounded = false; // mark success
                    }
                    else {
                        console.log(name + " doesn't exist!");
                        elem.onerror();
                    }

                }
            }
        }

    };

So, it will insert correct 'needed.png' to my src or 'no-image.png' from current dir.