innerHTML output current text labels, if there is a child tag in the tag will be output together even text within the tag itself and sub-sub-labels.
SUMMARY #outer output sub-label itself and the sub-label: <span ID = "Inter"> text </ span>
#INTER output current label content: text
innerText output only text in the current label, if there is a child tag in the tag, then only output the text content within the sub-tab.
#outer output current contents of the label and child label: text
#INTER output current label content: text
outerHTML output itself and the text inside the tag of the current tag, if there is a sub tag, the sub tag itself and the text inside the tag will be output together.
#outer output current label and the label itself and the sub-label content: <span id = "outer" > <span id = "inter"> text </ span> </ span>
Label #inter tag itself and the output sub-content: < span id = "inter"> text </ span>