Free Microsoft 70-480日本語 Practice Test & Real Exam Questions

Explanation

References:
https://www.w3.org/TR/css-cascade-3/#importance

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Explanation
Box 1:

Box 2:

Box 3:

Box 4:

Box 5:

first
Selects the first matched element.
Reference: :first Selector

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Explanation

When readyState is 4 and status is 200, the response is ready:
Example
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("myDiv").innerHTML=xmlhttp.responseText;
}
}
Note:
* readyState == 4
Holds the status of the XMLHttpRequest. Changes from 0 to 4:
0: request not initialized
1: server connection established
2: request received
3: processing request
4: request finished and response is ready
* status==200
200: "OK"
404: Page not found
Reference: AJAX - The onreadystatechange Event

Explanation

Code Segment: var host ="ws://sample-host/echo";
Segment:socket.onopen
References:
https://docs.microsoft.com/en-us/microsoft-edge/dev-guide/networking-and-connectivity/websocket

Explanation

var para = document.createElement("a");
var attr = document.createAttribute("href");
attr.value = "help.html";
para.setAttributeNode(attr);
var node = document.createTextNode("Help");
para.appendChild(node);
var element = document.getElementById("navlist");
element.appendChild(para);