在 JavaScript 中從字符串中去除所有非數字字符 - Strip all non-numeric characters from string in JavaScript

問題：

Consider a non-DOM scenario where you'd want to remove all non-numeric characters from a string using JavaScript/ECMAScript.考慮一個非 DOM 場景，您希望使用 JavaScript/ECMAScript 從字符串中刪除所有非數字字符。 Any characters that are in range 0 - 9 should be kept.應保留0 - 9範圍內的任何字符。

var myString = 'abc123.8<blah>';

//desired output is 1238

How would you achieve this in plain JavaScript?你將如何在純 JavaScript 中實現這一點？ Please remember this is a non-DOM scenario, so jQuery and other solutions involving browser and keypress events aren't suitable.請記住，這是一個非 DOM 場景，因此 jQuery 和其他涉及瀏覽器和按鍵事件的解決方案不適合。

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解決方案：

參考一： https://en.stackoom.com/question/7oQM
參考二： https://stackoom.com/question/7oQM