EN
JavaScript - remove substring from string between indexes
4 points
In this article, we are going to look at how to remove substring from a string using JavaScript.
Note: in practice when we want to remove some characters from existing string, we need to create new string, what was shown in the below example.
Practical example:
xxxxxxxxxx1
function removeSubstring(text, startIndex, endIndex) {2
if (endIndex < startIndex) {3
startIndex = endIndex;4
}5
var a = text.substring(0, startIndex);6
var b = text.substring(endIndex);7
return a + b;8
}9
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// Usage example:12
13
// index: 0 5 7 11 1414
// | | | | |15
var text = "This is my text";16
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console.log( removeSubstring(text, 0, 1) ); // is my text18
console.log( removeSubstring(text, 5, 7) ); // This my text19
console.log( removeSubstring(text, 1, text.length - 1) ); // TtOutput:
xxxxxxxxxx1
his is my text2
This my text3
Tt