imgPreview.ts

let images:HTMLCollectionOf<HTMLImageElement> = <HTMLCollectionOf<HTMLImageElement>> document.getElementsByTagName("img");
for(let i = 0; i < images.length; i++){
    let element:HTMLImageElement = images[i];
    if(!(element.getAttribute("data-noPreview") === "true")) {
        element.onclick = () => createDialogImage(element.src);
    }
}