正则表达式：在字符之前，之后提取

Question

给定以下字符串

stringData= "goal01=4 goal02=2 goal06=3 goal09=1 goal12=5 goal13=2 goal14=4 planet=52 people=48 Inclusion=4 HealthWellness=2 SustainableInfrastructure=4 ResponsibleConsumption=9 Environment=2" 

我需要一个正则表达式来解析以下两个变体

stringColumns = stringData(regex that //fetch before '=' and add ',' to string i.e goal01,goal02,planet etc..) 
stringValues= stringData(regex that //fetch after '=' and same as above 4,2,3,52, etc..) 

因为我需要将它们拆分以构建 sql 插入语句，例如

sqlSyntax = "INSERT INTO [table] ("'+stringColumns+'") VALUES ("'+stringValues+'")"

我试过^([^=])+并且它只匹配第一个目标goal01我需要什么来获取所有剩余部分？

https://regex101.com/r/QZgfPh/1

Answer 1

您不需要正则表达式。 简单地用空格分割然后用等号并拉出必要的字符：

 var stringData = "goal01=4 goal02=2 goal06=3 goal09=1 goal12=5 goal13=2 goal14=4 planet=52 people=48 Inclusion=4 HealthWellness=2 SustainableInfrastructure=4 ResponsibleConsumption=9 Environment=2"; var dataArray = stringData.split(" ") var stringColumns = dataArray.map(item => item.split("=")[0]).join(","); var stringValues = dataArray.map(item => item.split("=")[1]).join(","); console.log(stringColumns); console.log(stringValues);

这是 ES5 等效项，以防您无法使用 ES6 箭头函数：

 var stringData = "goal01=4 goal02=2 goal06=3 goal09=1 goal12=5 goal13=2 goal14=4 planet=52 people=48 Inclusion=4 HealthWellness=2 SustainableInfrastructure=4 ResponsibleConsumption=9 Environment=2"; var dataArray = stringData.split(" ") var stringColumns = dataArray.map(function(item) { return item.split("=")[0]; }).join(","); var stringValues = dataArray.map(function(item) { return item.split("=")[1]; }).join(",");; console.log(stringColumns); console.log(stringValues);

但是，如果您明确想使用正则表达式来执行此操作，则可以执行以下操作：

 var stringData = "goal01=4 goal02=2 goal06=3 goal09=1 goal12=5 goal13=2 goal14=4 planet=52 people=48 Inclusion=4 HealthWellness=2 SustainableInfrastructure=4 ResponsibleConsumption=9 Environment=2"; var stringColumns = stringData.match(/[A-Za-z0-9]+(?==)/g).join(","); var stringValues = stringData.match(/(?<==)[0-9]+/g).join(","); console.log(stringColumns); console.log(stringValues);