JS小提琴：

Question

例如，我们在javaScript中有下一个字符串

CREATE SEQUENCE SQ_ARAN_SQ_ARQUIVO_ANEXO;

CREATE OR REPLACE FUNCTION UFC_SPSW_DISP_COMPOSICAO(p_id_composicao IN NUMBER) RETURN NUMBER
IS
   retorno NUMBER:= 0;
   numeroItens NUMBER;
   temDefinicao BOOLEAN := false;

   CURSOR item_cur is
    select idc.itdc_sq_item_definicao_composi, idc.insu_sq_insumo, idc.comp_sq_composicao, idc.itdc_nr_coeficiente, idc.COMP_DS_COMPOSICAO, idc.comp_sq_composicao_pai
    from item_definicao_composicao idc;
  BEGIN  
    FOR item_rec IN item_cur LOOP
      temDefinicao := true;
      IF (item_rec.itdc_nr_coeficiente is null) THEN
        RETURN null;
      ELSE
        IF (item_rec.insu_sq_insumo is null) THEN
          numeroItens := UFC_SPSW_DISP_COMPOSICAO(nvl(item_rec.comp_sq_composicao_pai, item_rec.comp_sq_composicao));
        else
          retorno := retorno + 1;
        END IF;
      END IF;
    END LOOP;
    IF (temDefinicao = false) THEN
       RETURN 0;
    END IF;
    RETURN retorno;
  END;

CREATE SEQUENCE SQ_CALC_SQ_CALCULO;

我怎么能得到55,5作为数字？

Answer 1

这取决于您对数字的假设，但对于示例和很多情况，这应该有效：

＆＃13;

var str = "abc,de 55,5gggggg,hhhhhh";
var match = /\d+(,\d+)?/.exec(str);
var number;
if (match) {
  number = Number(match[0].replace(',', '.'));
  console.log(number);
} else console.log("didnt find anything.");

＆＃13;

Answer 2

＆＃13;

var str = "abc,de 55,5gggggg,hhhhhh"

var intRegex = /\d+((.|,)\d+)?/
var number = str.match(intRegex);
console.log(number[0]);

＆＃13;

Answer 3

JS小提琴：

https://jsfiddle.net/jiteshsojitra/5vk1mxxw/

var str = "abc,de 55,5gggggg,hhhhhh"
str = str.replace(/([a-zA-Z ])/g, "").replace(/,\s*$/, "");
if (str.match(/,/g).length > 1) // if there's more than one comma
    str = str.replace(',', '');
alert (str);

JavaScript使用逗号从字符串获取数字

3 个答案:

JS小提琴：