JQuery for and each performance comparison analysis_jquery

Recently I have been working on performance optimization and encountered many detailed problems. Now I will record the problems encountered one by one and share them with everyone. No thanks for the nonsense. I will post the code directly.

Copy code The code is as follows:

< /head>

< option value='1'>111111
222222
333333
444444
5
6< /option>
7
8
9
10
11
12
13
14
15
16
1718
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20

Input difference:
for loop execution time: 1
Each loop execution time: 3
The two results directly illustrate the problem.

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