我想删除除“。”之外的所有非数字和所有标点符号。

Question

I want to remove all non-digit symbols and punctuations except ".". I have done similar job to remove all non-digit symbols like this:

 if (!/^[0-9]+$/.test(this.value)) {
     this.value = this.value.replace(/\D/, "");
}

How can I do that? Thanks for helping.

Answer 1

this.value = this.value.replace(/[^\d\.]/g, "");

Answer 2

The \D will match any character that is not a digit.

If you also don't want to match a dot, you could use a negated character class [^\d.]+ which will match any character except a dot or a digit.

As you are replacing it with an empty string, you could repeat the character class 1+ times.

Use the /g global flag to replace all occurrences.

this.value = this.value.replace(/[^\d.]+/g, "");