Example Analysis of if statement

If sentence example analysis, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

All events contain three elements of the js event:

1, the event source (that is, the tag or element that triggers the event)

2, event name (name of response event)

3. Analyze the response of the event

In this case, it is obvious that the p tag is the event source that triggers the event, onclick is the event name, and the response triggered is not fixed.

That is, it will correspond to different events according to different conditions. So, of course, we need to add a condition, and the specific usage is:

If (condition) {

/ / do something

}

Code:

/ / html part

Input method

to write

Pinyin

Close

/ / js part

Var oul=document.getElementById ("uul")

Function ou () {

If (oul.style.display== "block") {

/ / pay special attention to the equal sign above to judge whether it is equal or not, and the equal sign below is an assignment

Oul.style.display= "none"

} else {

Oul.style.display= "block"

}

}

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