JavaScript Strip all non-numeric characters from string
In this article, we will strip all non-numeric characters from a string. In order to remove all non-numeric characters from a string, replace() function is used.
JavaScript replace() Function: This function searches a string for a specific value, or a RegExp, and returns a new string where the replacement is done.
Syntax:
string.replace( searchVal, newValue )
Example 1: This example strips all non-numeric characters from the string ‘1Gee2ksFor345Geeks6’ with the help of RegExp.
html
<body style="text-align:center;"> <h1 style="color:green;"> GeeksForGeeks </h1> <h3> JavaScript | Strip all non-numeric characters from string </h3> <p id="GFG_UP" style="color:green; font-size: 20px;"></p> <button id="GFG_Button" onclick="stripValues()"> ClickHere </button> <p id="GFG_P" style="color:green; font-size: 20px;"></p> <script> var up = document.getElementById("GFG_UP"); var down = document.getElementById("GFG_P"); var str = "1Gee2ksFor345Geeks6"; up.innerHTML = str; function stripValues() { down.innerHTML = str.replace(/\D/g,''); } </script></body> |
Output:
Strip all non-numeric characters from string
Example 2: This example strips all non-numeric characters from the string ‘1Gee2ksFor345.Gee67ks89’ with the help of RegExp. This example preserves the float numbers.
html
<body style="text-align:center;"> <h1 style="color:green;"> GeeksForGeeks </h1> <h3> JavaScript | Strip all non-numeric characters from string </h3> <p id="GFG_UP" style="color:green; font-size: 20px;"></p> <button id="GFG_Button" onclick="stripValues()"> ClickHere </button> <p id="GFG_P" style="color:green; font-size: 20px;"></p> <script> var up = document.getElementById("GFG_UP"); var down = document.getElementById("GFG_P"); var str = "1Gee2ksFor345.Gee67ks89"; up.innerHTML = str; function stripValues() { down.innerHTML = str.replace(/[^\d.-]/g, ''); } </script></body> |
Output:
Strip all non-numeric characters from string
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