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40 lines
877 B
HTML
40 lines
877 B
HTML
<!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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}
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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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<p>I am a p element inside div, and I have a <span id="mySPAN"><b>span</b></span> element inside of me.</p>
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</div>
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<span id="mySPAN2"><b>span</b></span>
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<p>Click the button to find out if the div element contains a span element.</p>
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<button onclick="myFunction()">Try it</button>
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<p id="demo"></p>
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<script>
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function myFunction() {
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var span = document.getElementById("mySPAN");
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var span2 = document.getElementById("mySPAN2");
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var div = document.getElementById("myDIV").contains(span);
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var div2 = document.getElementById("myDIV").contains(span2);
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console.assert(div, 'myDIV contains mySPAN');
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console.assert(!div2, '!myDIV contains mySPAN2');
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}
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console.error('element.contains.html');
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myFunction();
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console.exit();
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</script>
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</body>
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</html>
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