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Write the output of the following JavaScript statements :(i) document.write(1 + ‘‘2’’ + ‘‘2’’);(ii) document.write(‘‘1’’ + ‘‘2’’ + ‘‘2’’);

Question

Write the output of the following JavaScript statements :(i) document.write(1 + ‘‘2’’ + ‘‘2’’);(ii) document.write(‘‘1’’ + ‘‘2’’ + ‘‘2’’);

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Solution

(i) The output of the JavaScript statement document.write(1 + ''2'' + ''2''); will be 122. This is because JavaScript performs type coercion in such a way that it converts the number 1 into a string when it sees that the other operands are strings. So, it concatenates the strings together resulting in 122.

(ii) The output of the JavaScript statement document.write(''1'' + ''2'' + ''2''); will be 122. In this case, all the operands are strings, so JavaScript simply concatenates them together resulting in 122.

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