how to check: if array includes specific text properly?

Question

I am struggling with doing an array search that includes a piece of text that must include back slashes in it. I have tried includes(''); negating includes(''); and also trying similar using indexOf('').

I have a simple array, with at maximum four values; typically it has two, here is how it typically looks:

{tks: Array(2)}
tks: Array(2)
0: "https://mycoolwebsite.net/arcgis/rest/services"
1: "https://mycoolwebsite.com/arcgis/rest/services"
length: 2
__proto__: Array(0)
__proto__: Object

Here are the simple checks I'm trying to do: My second check with *includes* 'wdt' text seems to be working so I assume it's something with the backslashes. Anyway I can handle this? I'm perplexed why my if and else both get hit with the first check below using back slashes... I added the negating on the else to double check.. with and without that in the else, else is always hit.

    // right before doing the search I am building the array, just to add more context

    for (let i = 0; i < coolObj.length; i++) {
      if (coolObj[i].url){
          tr = coolObj[i].url;
          tks.push(tr);

          console.log({tks});     
       }
     }

    console.log({tks}); // consoles as I have included above ^

    if (tks.includes('/arcgis/rest/services')) {
            
      console.log({tks});     

    } else if (!tks.includes('/arcgis/rest/services')) { 

      console.log({tks});

      console.log('does not include correct url');
      aT = '/arcgis/rest/services';
      lP = false;
      filterAt(aT);
    }
    if (tks.includes('wdt')) {
      console.log({tks});

    }else {
      console.log({tks});
      wT = 'wdt';
      filterWt(wT);
    }

You only doing a compare of the whole value,.. eg. None of you compare have the full url with https://... etc in them, IOW: none of your includes are going to return true. — Keith
– Keith, Commented Sep 30, 2020 at 19:24
Wow... then what could I do to achieve 'contains' specific text? — Lieutenant Dan
– Lieutenant Dan, Commented Sep 30, 2020 at 19:26

Randy Casburn · Accepted Answer · 2020-09-30 19:32:48Z

1

From the MDN docs: The includes() method determines whether an array includes a certain value among its entries, returning true or false as appropriate.

You have to test the strings using String.prototype.includes within the array elements thus:

const arr = ["https://mycoolwebsite.net/arcgis/rest/services", "https://mycoolwebsite.com/arcgis/rest/services"];

arr.forEach(el => {
  if (el.includes('/arcgis/rest/services')) {
    console.log(el, ': includes url');
  }
  else {
    console.log('does not include correct url');
  }
  if (el.includes('wdt')) {
    console.log(el, ': includes wdt');
  } else {
    console.log('does not include correct wdt');

  }

});

answered Sep 30, 2020 at 19:32

Randy Casburn

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