How to create multi-line strings in JavaScript?

The multi-line strings were not supported by JavaScript 2015 but when ES6 came out and introduced string literals. The ES6 supports multi-line strings. There are various ways to handle multi-line strings if older browser support is essential.

Method 1: Multiline-strings are created by using template literals. The strings are delimited using backticks, unlike normal single/double quotes delimiter.

Example: This example uses template literals to create multi-line strings.

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<!DOCTYPE html>
<html>
      
<head>
    <title>
        Create multi-line strings
    </title>
</head>
  
<body>
    <h1 style="color: green">
        GeeksforGeeks
    </h1>
      
    <b>
        How to create multi-line
        strings in JavaScript?
    </b>
      
    <div class="multiline"></div>
      
    <p>
        Click on the button to
        insert multiline text
    </p>
      
    <button onclick="showMultiline()">
        Click here
    </button>
      
    <script type="text/javascript">
        function showMultiline() {
            multilineString = 
                `<div>
                    <h3>This is the heading</h3>
                    <p>
                        This is a paragraph. This uses
                        template literals that were
                        added in ES6 of JavaScript
                    </p>
                </div>`
              
            document.querySelector('.multiline').innerHTML
                    = multilineString;
        }
    </script>
</body>
  
</html>

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Output:


    

  • Before clicking the button:
    

    • 

  • After clicking the button:
    
template
    • 



Method 2: Using the backslash to escape the literal newlines: The other method that can be used to create multi-line strings is escaping every newline on each line.


Example: This example uses the backslash to escape the literal newlines to create multi-line strings.











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<!DOCTYPE html> 


<html> 


      


<head> 


    <title> 


        Create multi-line strings 


    </title> 


</head> 


  


<body> 


    <h1 style="color: green"> 


        GeeksforGeeks 


    </h1> 


      


    <b> 


        How to create multi-line 


        strings in JavaScript?  


    </b> 


      


    <div class="multiline"></div> 


      


    <p> 


        Click on the button to 


        insert multiline text 


    </p> 


      


    <button onclick="showMultiline()"> 


        Click here 


    </button> 


      


    <script type="text/javascript"> 


        function showMultiline() { 


            multilineString =  


                "<div> \ 


                    <h3>This is the heading</h3> \ 


                    <p>This is a paragraph \ 


                    This uses backslashes in place\ 


                    of new lines</p> \ 


                </div>" 


       


            document.querySelector('.multiline').innerHTML 


                    = multilineString; 


        } 


    </script> 


</body> 


</html> 



















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Output:


    

  • Before Clicking the button:
    

    • 

  • After Clicking the button:
    
backslash
    • 



Method 3: Concatenating the individual strings together: The simplest, but the cumbersome way is separating each line as a string and concatenating into one final string.


Example: This example concatenate the string to create multi-line strings.











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<!DOCTYPE html> 


<html> 


      


<head> 


    <title> 


        Create multi-line strings 


    </title> 


</head> 


  


<body> 


    <h1 style="color: green"> 


        GeeksforGeeks 


    </h1> 


      


    <b> 


        How to create multi-line  


        strings in JavaScript?  


    </b> 


      


    <div class="multiline"></div> 


      


    <p> 


        Click on the button to 


        insert multiline text 


    </p> 


      


    <button onclick="showMultiline()"> 


        Click here 


    </button> 


      


    <script type="text/javascript"> 


        function showMultiline() { 


            multilineString =  


                "<div>" + 


                    "<h3>This is the heading</h3>" + 


                    "<p>This is a paragraph" + 


                    "This uses simple concatenation " + 


                    "of strings for every line</p> " + 


                "</div>" 


       


            document.querySelector('.multiline').innerHTML 


                    = multilineString; 


        } 


    </script> 


</body> 


  


</html> 



















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Output:


    

  • Before Clicking the button:
    

    • 

  • After Clicking the button:
    
concatenate
    • 




          
          
          
          

            

    

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