Week 3, August

Time flies. In a twinkling of an eye, we have entered the second stage of learning. I am glad that the legendary jquery has started learning. And our mentor has changed!

The two days of study made me feel quite relaxed. It seems that jquery and JS are really different! It is easier to learn. Of course, this also has a certain relationship with our mentor's teaching methods!

What I think is confusing over the past two days is as follows:

1. Conversion between jquery objects and DOM objects

1) jquery object;

VaR $ Cr = $ ("# Cr ");

Method 1: var Cr = $ cr [0]; // convert to a DOM object

Method 2: var Cr = $ Cr. Get (0); // convert to jquery object

2) DOM object;

VaR Cr = doucment. getelementbyid ("cr ");

VaR $ Cr = $ ("cr"); // convert to jquery object