[英]get all numbers in a string and push to an array (javascript)
So if I had the following string: 因此,如果我有以下字符串:
'(01) Kyle Hall - Osc (04) Cygnus - Artereole (07) Forgemasters - Metalic (10) The Todd Terry Project - Back to the Beat (14) Broken Glass - Style of the Street'
I could look through the string and push any numbers in the string to an array, which would look like this: 我可以查看字符串,并将字符串中的任何数字推入数组,如下所示:
[01,04,07,10,14]
Use a regular expression: 使用正则表达式:
var numbers = str.match(/\d+/g);
This will result in ["01", "04", "07", "10", "14"]
(array of strings). 这将导致
["01", "04", "07", "10", "14"]
(字符串数组)。 If the type of the elements matters to you you can follow up with .map(Number)
to convert to numbers: 如果元素的类型对您很重要,则可以使用
.map(Number)
转换为数字:
var reallyNumbers = str.match(/\d+/g).map(Number);
which will result in [1, 4, 7, 10, 14]
. 这将导致
[1, 4, 7, 10, 14]
。
Note that map
is not available in IE earlier than version 9, so depending on your compat requirements you might need a polyfill. 请注意,在版本9之前的IE中,
map
不可用,因此根据您的兼容性要求,可能需要使用polyfill。 There's a ready-made one on MDN. MDN上有一个现成的。
var str = '(01) Kyle Hall - Osc (04) Cygnus - Artereole (07) Forgemasters - Metalic (10) The Todd Terry Project - Back to the Beat (14) Broken Glass - Style of the Street';
var nums = str.match(/\d+/g);
nums.map(function (num) {
return parseInt(num, 10);
});
For browsers that does not support Array.prototype.map
, use this code: 对于不支持
Array.prototype.map
浏览器,请使用以下代码:
var str = '(01) Kyle Hall - Osc (04) Cygnus - Artereole (07) Forgemasters - Metalic (10) The Todd Terry Project - Back to the Beat (14) Broken Glass - Style of the Street';
var nums = str.match(/\d+/g);
for (var i = 0; i < str.length; i++) {
str[i] = parseInt(str[i], 10);
}
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