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JavaScript library functions

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Input and Output functions

IO Methods from BOM:

Input method window.prompt() Output method window.alert() example: 
<script>
   var number=window.prompt("Enter a number:");
   alert(number);
</script>

IO Methods from DOM:

input: var data=document.getElementById("input_element_id").value; output: document.getElementById("output_element_id").innerHTML=data;
  
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Mohammad Towhidul Islam
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