Typescript - Parsing error: Expression expected

Question

I'm using vue and typescript and I meet a problem, how to fix it? Here is my code:

private setTitle(systemConfig: any) {
    const systemConfigParse;
    let obj;
    systemConfigParse = JSON.parse(systemConfig);
    obj = (<any>systemConfigParse).find((item: any) => {
      return item.Code == "hospitalName";
    });
    this.hospitalName = obj.Value;
    obj = (<any>systemConfigParse).find((item: any) => {
      return item.Code == "systemName";
    });
    this.systemName = obj.Value;
    this.title = this.hospitalName + this.systemName;
  }

The error is at this row return item.Code == "hospitalName"; But after I deleting the code:

 obj = (<any>systemConfigParse).find((item: any) => {
          return item.Code == "hospitalName";
        });
 obj = (<any>systemConfigParse).find((item: any) => {
          return item.Code == "systemName";
        });

It still has error Is it the trick made by eslint? How to fix it? Thank you very much

devdgehog · Accepted Answer · 2020-10-23 02:32:37Z

1

You can simplify your code a lot:

public setTitle(systemConfig: string) {
    const systemConfigParse = JSON.parse(systemConfig);
    this.hospitalName = systemConfigParse.hospitalName;
    this.systemName = systemConfigParse.systemName;
    this.title = this.hospitalName + this.systemName;
}

Data would be shaped like this:

const jsonMock = `{"hospitalName":"hospital", "systemName": "system"}`;
yourInstance.setTitle(jsonMock);

answered Oct 23, 2020 at 2:32

devdgehog

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2 Comments

Moon Over a year ago

I can't simplify it like this because the input 'systemConfig' has other properties..So I can't change it to string

devdgehog Over a year ago

Then your own answer is the way to go, you should avoid to use any if you know the type (here a string) :)

Moon · Accepted Answer · 2020-10-23 06:00:31Z

I fixed it

private setTitle(systemConfig: any) {
    const systemConfigParse= JSON.parse(systemConfig);
    let obj;
    for(const item in systemConfigParse){
      const i = systemConfigParse[item];
      if(i.Code=="hospitalName"){
        this.hospitalName = i.Value;
      } else if(i.Code=="systemName"){
        this.systemName = i.Value;
      }
    }
    this.title = this.hospitalName + this.systemName;
  }

I used forof instead forin, thanks to @devdgehog

private setTitle(systemConfig: any) {
    const systemConfigParse = JSON.parse(systemConfig);
    let obj;
    for (const item of systemConfigParse) {
      if (item.Code == "hospitalName") {
        this.hospitalName = item.Value;
        console.log(this.hospitalName);
      } else if (item.Code == "systemName") {
        this.systemName = item.Value;
      }
    }
    this.title = this.hospitalName + this.systemName;
  }

Instead of using for(const item in systemConfigParse) consider using for(const item of systemConfigParse) (of) and use item directly, your code will be clearer.

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