javascript jQuery 删除除数字和小数以外的所有字符
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时间：2020-10-27 00:51:03 来源:igfitidea点击:
jQuery remove all characters but numbers and decimals
提问by user2179950
var price = ".03";
var newPrice = price.replace('$', '')
This works, but price can also be such as:
这有效，但价格也可以是：
var price = "23.03 euros";
and many many other currencies.
以及许多其他货币。
Is there anyway that I could leave only numbers and decimal(.)?
无论如何我只能留下数字和小数（。）？
回答by Matt Cain
var newPrice = price.replace(/[^0-9\.]/g, '');
No jQuery needed. You will also need to check if there is only one decimal point though, like this:
不需要jQuery。您还需要检查是否只有一个小数点，如下所示：
var decimalPoints = newPrice.match(/\./g);
// Annoyingly you have to check for null before trying to
// count the number of matches.
if (decimalPoints && decimalPoints.length > 1) {
// do whatever you do when input is invalid.
}
回答by Tirupathi Raju
var newprice = price.replace( /\D+$/, '');
