Write a javascript function to match string starting with .AB or AB The string should either...
Write a javascript function to match string starting with .AB or AB
The string should either start with .AB or AB followed by any characters.
i am getting confused how to form regular expression and tech and match using function . the string should match with the first two characters AB or first three characters .AB then only alert statement("string is correct") otherwise alert statement ("String is not correct")
input1 : .AB2e234324
output: string is correct
input2 : AB44r4r44r
output: string is correct
input3 : ABdsfdsfds
output: string is correct
input4 : AfB.dsf3
output string is incorrect
=======================
The language is Javascript.
Homework Answers
OUTPUT
CODE TO COPY
<!DOCTYPE html>
<html>
<body>
<script>
function fun(a) {
if(a[0] == '.' && a[1] == 'A' && a[2] == 'B')
alert("string is correct");
else if(a[0] == 'A' && a[1] == 'B')
alert("string is correct");
else
alert("string is incorrect");
}
fun(".AB2e234324");
</script>
</body>
</html>
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Write a javascript function to match string starting with
.AB or AB
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