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33 lines
716 B
HTML
33 lines
716 B
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<style>
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#myDIV {
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border: 1px solid black;
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margin: 5px;
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}
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</style>
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</head>
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<body>
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<div id="myDIV">
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<h2 class="example">A heading with class="example" in div</h2>
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<p class="example">A paragraph with class="example" in div.</p>
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</div>
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<p>Click the button to add a background color to the first element in DIV with class="example" (index 0).</p>
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<button onclick="myFunction()">Try it</button>
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<p><strong>Note:</strong> The querySelectorAll() method is not supported in Internet Explorer 8 and earlier versions.</p>
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<script>
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function myFunction() {
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var x = document.getElementById("myDIV").querySelectorAll(".example");
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x[1].innerText = "red";
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}
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</script>
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</body>
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</html>
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