javascript　将变量值作为对象属性　获取对象对应的值

      test(){
        let form={
          bar_rule_txt:'{spu}-{master_attr_value}-{slave_attr_alias}',
          bar_rule_result:'',
          spu:'JPK1575G',
          master_attr_value:'黑色',
          master_attr_alias:'C001',
          slave_attr_value:'XXL',
          slave_attr_alias:'S002',
        };


        let bar_rule_txt = form.bar_rule_txt;
        const regex = /\{([^}]+)\}/g; // 匹配大括号里面内容

        let match,rule_attr=[];
        while ((match = regex.exec(bar_rule_txt))) {
          //console.log(match[1]); // 输出捕获组内匹配的内容，即大括号内的内容
          rule_attr.push(match[1]);
        }
        console.log(rule_attr);//打印正则表达式-匹配的内容

        let propertyName = "form."+rule_attr[0];
        console.log(propertyName);//form.spu
        let objname = eval(propertyName);
        console.log(objname);//JPK1575G


      },

转： https://www.cnblogs.com/mxjx/p/3259455.html