25 lines
703 B
HTML
25 lines
703 B
HTML
<!DOCTYPE html>
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<math>
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<mfrac id="mfrac"><mn>1</mn><mn>2</mn></mfrac>
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<msqrt id="msqrt"><mi>a</mi><mi>b</mi><mi>c</mi></msqrt>
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<mn id="mn4">4</mn>
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<mn id="mn5">5</mn>
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<mn id="mn6">6</mn>
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<mn id="mn7">7</mn>
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</math>
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<script>
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document.body.offsetTop;
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var mfrac = document.getElementById("mfrac");
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mfrac.replaceChild(document.getElementById("mn4"), mfrac.lastChild);
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mfrac.replaceChild(document.getElementById("mn5"), mfrac.firstChild);
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var msqrt = document.getElementById("msqrt");
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msqrt.replaceChild(document.getElementById("mn6"), msqrt.firstChild);
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msqrt.replaceChild(document.getElementById("mn7"), msqrt.lastChild);
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</script>
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