回答編集履歴
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@@ -1 +1,49 @@
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[JavaScriptで数値を桁区切り (カンマ区切り) にする方法](http://so-zou.jp/web-app/tech/programming/javascript/grammar/data-type/string/comma-formatting.htm)
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```
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<!DOCTYPE html>
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<html>
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<head>
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<script>
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function count(){
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strPrice = document.getElementById("price")
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console.log(strPrice);
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var i = strPrice.split(',');
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}
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</script>
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</head>
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<body>
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<p id = "price">
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6,590
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</p>
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<p id = "Number" value = "2" >
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</p>
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<input type="button" onClick = "count()">
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</body>
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</html>
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```
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たぶんこれでもほぼ同じことしてると思うんですがstrPrice.split(',');でコンソールのほうにエラーありませんか？
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