javascript 正则表达式从字符串中拆分数字
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regex to split number from string
提问by alucard
How to split and select which is number using regex. User can enter string like:
如何使用正则表达式拆分和选择哪个数字。用户可以输入如下字符串：
1dozen 3 dozen dozen1 <= unlikely but assume user will type that too
1 打 3 打打 1 <= 不太可能但假设用户也会输入
30/kg
30/公斤
I still find out with the incomplete one:
我仍然发现不完整的：
/[a-z](?=\d)|\d(?=[a-z])/i
But missing space and forward slash. Can anyone help me?
但缺少空格和正斜杠。谁能帮我？
回答by Ray Toal
The lookarounds are completely unnecessary here!
这里完全不需要环视！
See http://jsfiddle.net/5WJ9v/
The code:
代码：
var text = "1dozen 3 dozen dozen1 30/kg";
var regex = /(\d+\.|\d+)+/g;
alert(text.match(regex));
You get a match object with all of your numbers.
您会得到一个包含所有号码的匹配对象。
The script above correctly alerts 1,3,1,30.
上面的脚本正确地发出警报1,3,1,30。
回答by Sahil Muthoo
var str = '1dozen 3 dozen dozen1 30/kg';
str.match(/\d+/g); // ["1", "3", "1", "30"]
