使用javascript DOM生成HTML

Question

I want to generate an img tag like this with javascript:

<img id="drag0" src="http://localhost:34737/Images/MainSlider/A(1).jpg" class="col-4" draggable="true" ondragstart="drag(event)">

and drag method:

document.addEventListener("drag", function (ev) {
    ev.dataTransfer.setData("text", ev.target.id);
}, false);

When I generate the dynamic html it's not working as expected and it returns this in the DOM:

 <img id="drag1" src="http://localhost:34737/Images/MainSlider/B(1).jpg" class="col-4" draggable="true" ondragstart="function drag(ev) {
    ev.dataTransfer.setData(&quot;text&quot;, ev.target.id);}">

This is my javascript code:

 var img = document.createElement("img");
 img.setAttribute("id", "drag" + i);
 img.setAttribute("src", user[i].MainPicAddress);
 img.setAttribute("class", "col-" + e);
 img.setAttribute("draggable", true);
 img.setAttribute("ondragstart", drag); 

Answer 1

您需要将ondragstart属性值放在这样的引号中：

img.setAttribute("ondragstart", "drag(event)"); 

Answer 2

try adding double quotes around the setAttribute 2nd parameter.

img.setAttribute("ondragstart", 'drag(event)'); 

or something like

img.setAttribute("ondragstart", 'drag');