Read Then Write
Read Then Write
DOM updates often depend on what the page already says. In that case, read the current text first, convert it to the type your calculation needs, then write the new display text.
The common mistake is changing a separate number variable while the visible DOM count stays stale.
Your task: Read the current cart count from the page, add one item, then update both the count and the summary so they show the new total.
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Read Then Write
DOM updates often depend on what the page already says. In that case, read the current text first, convert it to the type your calculation needs, then write the new display text.
The common mistake is changing a separate number variable while the visible DOM count stays stale.
Your task: Read the current cart count from the page, add one item, then update both the count and the summary so they show the new total.