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JavaScript | Pass string parameter in onClick function
  • Last Updated : 21 Jun, 2019
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The task is to pass a string as a parameter on onClick function using javascript, we’re going to discuss few techniques.

Example 1: This example simply put the argument which is string in the onClick attribute of the button which calls a function with a string as an argument using onClick() method.




<!DOCTYPE HTML>
<html>
  
<head>
    <title>
        JavaScript 
      | Pass string parameter in onClick function.
    </title>
</head>
  
<body style="text-align:center;" 
      id="body">
    <h1 style="color:green;">  
            GeeksForGeeks  
        </h1>
    <p id="GFG_UP" 
       style="font-size: 19px; 
              font-weight: bold;">
    </p>
    <button onclick="GFG_Fun('Parameter'); ">
        click here
    </button>
    <p id="GFG_DOWN"
       style="color: green; 
              font-size: 24px;
              font-weight: bold;">
    </p>
    <script>
        var up = 
            document.getElementById('GFG_UP');
        var down = 
            document.getElementById('GFG_DOWN');
        up.innerHTML = 
          'Click on button to pass the '+
          'string parameter to the function';
  
        function GFG_Fun(parameter) {
            down.innerHTML = "String '" 
            + parameter + "' Received";
        }
    </script>
</body>
  
</html>

Output:

  • Before clicking on the button:
  • After clicking on the button:

Example 2: This example simply put the argument which is a string in the onClick attribute of the button which calls a function with string as an argument using onClick() method. Here the input button is created dynamically. This example uses the same approach as the previous one.




<!DOCTYPE HTML>
<html>
  
<head>
    <title>
        JavaScript 
      | Pass string parameter in onClick function.
    </title>
</head>
  
<body style="text-align:center;" 
      id="body">
    <h1 style="color:green;">  
            GeeksForGeeks  
        </h1>
    <p id="GFG_UP"
       style="font-size: 19px; 
              font-weight: bold;">
    </p>
    <p id="GFG_DOWN"
       style="color: green; 
              font-size: 24px;
              font-weight: bold;">
    </p>
    <script>
        var up = document.getElementById('GFG_UP');
        var down = document.getElementById('GFG_DOWN');
        var inputEl = document.createElement('input');
        inputEl.type = 'button';
        inputEl.value = "Click here";
        inputEl.addEventListener('click', function() {
            GFG_Fun('Parameter');
        });
        document.body.insertBefore(inputEl, down);
        up.innerHTML = 
          'Click on button to pass the '+
          'string parameter to the function';
  
        function GFG_Fun(parameter) {
            down.innerHTML = "String '" +
              parameter + "' Received";
        }
    </script>
</body>
  
</html>

Output:

  • Before clicking on the button:
  • After clicking on the button:

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