Thursday, 29 December 2016

how to find vowels in a string in javascript

how to find vowels in a string in javascript

Introduction:

Here I will explain how to find vowels in a string in  javascript. In javascript such a not inbuilt function to get how to find vowels in a string in javascript so I have create this small function to how to find vowels in a string in javascript . It is easiest way to  how to find vowels in a string in javascript.

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how to find vowels in a string in javascript


Javascript function:


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function VowelsData() {
    var Data = document.getElementById('txtData').value;
    if (Data == "")
    {
        alert('Enter value to check find vowels in a string');
        return;
    }
    var Count = 0;
    var Vowels = "";
    for (var Counter = 0; Counter < Data.length; Counter++) {
        if (Data.charAt(Counter).match(/[a-zA-Z]/) != null) {
            if (Data.charAt(Counter).match(/[aeiouAEIOU]/)) {
                Vowels = Vowels + Data.charAt(Counter);
                Count++;
            }
        }
    }
    if (Vowels == "")
    {
        Vowels = "Oops No Vowels";
    }
    document.getElementById('lblVowels').innerHTML = Vowels;
    document.getElementById('lblVowelsCount').innerHTML = Count;
}



Complete Example for how to find vowels in a string in javascript:


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<html>
<head>
    <title>how to find vowels in a string in javascript</title>
    <script>
function VowelsData() {
    var Data = document.getElementById('txtData').value;
    if (Data == "")
    {
        alert('Enter value to check find vowels in a string');
        return;
    }
    var Count = 0;
    var Vowels = "";
    for (var Counter = 0; Counter < Data.length; Counter++) {
        if (Data.charAt(Counter).match(/[a-zA-Z]/) != null) {
            if (Data.charAt(Counter).match(/[aeiouAEIOU]/)) {
                Vowels = Vowels + Data.charAt(Counter);
                Count++;
            }
        }
    }
    if (Vowels == "")
    {
        Vowels = "Oops No Vowels";
    }
    document.getElementById('lblVowels').innerHTML = Vowels;
    document.getElementById('lblVowelsCount').innerHTML = Count;
}
    </script>
</head>
<body>
    <h1>how to find vowels in a string in javascript</h1>
    <div style="padding: 50px">
<table border="0" cellpadding="3" cellspacing="3">
<tr>
    <td>Enter Input :
    </td>
    <td>
        <input type='text'  id='txtData' >
    </td>
</tr>
    <tr>
    <td colspan="2">
        <input type='button' value='Find Vowels' onclick="VowelsData();">
    </td>
</tr>
<tr>
    <td>Total Vowels Count :
    </td>
    <td>
        <label id="lblVowelsCount"></label>
    </td>
</tr>
<tr>
    <td>Total Vowels :
    </td>
    <td>
            <label id="lblVowels"></label>
    </td>
</tr>
</table>
    </div>
</body>
</html>

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