我有一个字符串A =“，1,2,3,123” &安培;我想要替换“，12” [英] I Have A String A=",1,2,3,123" & I Want To Replace ",12"

问题描述

我有一个字符串a =，1,2,3,123&我想要替换，12并且我希望结果a =，1,2,3,123通过使用javascript我应该如何获得

I have a string a=",1,2,3,123" & i want to replace ",12" and i want result a=",1,2,3,123" by using javascript how should i get

推荐答案

替换，1，与 +，会给你预期结果

你必须将，1，1替换为+，如下所示：



var str =，1,2,3,123;

var txt = str.replace（，1，，+，）;

You have to replace ",1," insted of ",1" to "+," like this:

var str = ",1,2,3,123";
var txt = str.replace(",1,","+,");

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