index.html: <!DOCTYPE html> <html lang="en"> <head> <title&...
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> &...
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> &...
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<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"&...
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> &...
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<!DOCTYPE html> <html lang="en"> <head> &nbs...
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<!DOCTYPE html> <html lang="en"> <head> &nbs...
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<!DOCTYPE html> <html lang="en"> <head> &nbs...
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總結(jié)：這個案例很簡單，但是骨架都有。簡單易懂，截圖：代碼：<!DOCTYPE html><html lang="en"><head><me...
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通過id獲取元素 document.getElemtById(' id ')通過標簽獲取元素 ...
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<!DOCTYPE html><html><head> <title>全選</title> <style type="tex...
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<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"&...
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<!DOCTYPE html> <html lang="en"> <head> &nbs...
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<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"&...
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<!doctype html><html> <head> ...
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