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Javascript – Adding elements of of an array of integers

The following code doesn’t work as expected. How can I stop it from concatenating?

function blah(){
let testArray = [1,2,3,4,5];

      console.log('testArray[0]+1 = ' + testArray[0]+1);
      }

https://jsfiddle.net/ut2k67oc/

How to I get this to add an array element to another integer instead of concatenating?

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3

Answers


  1. 0 
    function blah() {
  let testArray = [1, 2, 3, 4, 5];
  console.log('testArray[0]+1 = ' + (testArray[0] + 1));
}
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  2. 0

    Use parenthesis

    function blah(){
  let testArray = [1,2,3,4,5];
  console.log('testArray[0]+1 = ' + (testArray[0]+1));
}
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  3. 0

    You can use the template literals

    function blah() {
  const str = 'testArray[0]+1 = ';
  const testArray = [1, 2, 3, 4, 5];
  console.log(`${str}${testArray[0] + 1}`);
}
blah()
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