JavaScript 正则表达式 - 从单词旁边提取数字
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JavaScript Regular Expression - Extract number from next to word
提问by Tom
Been a long time since I have touched regular expressions. It's simple but I am pulling my hair out over it.
很久没有接触正则表达式了。这很简单，但我正在把头发拉出来。
I have a string as follows that I get from the DOM "MIN20, MAX40". I want to be able to use regex in JavaScript to extract the integer next to MINand the integer next to MAXand put into separate variables minand max. I cannot figure a way to do it.
我有一个从 DOM 获取的字符串，如下所示"MIN20, MAX40"。我希望能够在 JavaScript 中使用正则表达式来提取旁边MIN的整数MAX和旁边的整数并将其放入单独的变量min和max. 我想不出办法做到这一点。
Thanks to who ever helps me, you will be a life saver!
感谢曾经帮助过我的人，您将成为救生员！
Cheers
干杯
回答by codaddict
You can use:
您可以使用：
var input = "MIN20, MAX40";
var matches = input.match(/MIN(\d+),\s*MAX(\d+)/);
var min = matches[1];
var max = matches[2];
回答by Tom
I think this would work:
我认为这会奏效：
var matches = "MIN20, MAX40".match(/MIN(\d+), MAX(\d+)/);
var min = matches[1];
var max = matches[2];
回答by Tim Down
The following will extract numbers following "MIN" and "MAX" into arrays of integers called minsand maxes:
下面将把 "MIN" 和 "MAX" 后面的数字提取到名为minsand的整数数组中maxes：
var mins = [], maxes = [], result, arr, num;
var str = "MIN20, MAX40, MIN50";
while ( (result = /(MIN|MAX)(\d+)/g.exec(str)) ) {
arr = (result[1] == "MIN") ? mins : maxes;
num = parseInt(result[2]);
arr.push(num);
}
// mins: [20, 50]
// maxes: [40]
回答by Gabriele Petrioli
This should do the trick.
这应该可以解决问题。
var str='MIN20, MAX40';
min = str.match(/MIN(\d+),/)[1];
max = str.match(/MAX(\d+)$/)[1];
回答by Gabriele Petrioli
var str = "MIN20, MAX40";
value = str.replace(/^MIN(\d+),\sMAX(\d+)$/, function(s, min, max) {
return [min, max]
});
console.log(value); // array
