22 lines
638 B
HTML
22 lines
638 B
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<script>
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function add(){
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var num=document.getElementsByClassName("num")
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console.log(num[0].value,'+',num[1].value)
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console.log(Number(num[0].value)+Number(num[1].value))
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}
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</script>
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</head>
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<body>
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<input type="text" value="" class="num">
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<input type="text" value="" class="num"><br/>
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<button onclick="add()">加</button>
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</body>
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</html> |