Re, replacing the string/with –

Replace the string/with – :

'2017/22/33'.replace(/\//g, '-')
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If the g is not followed, only the first character is replaced.

Alternatively, we can put variables in regular expressions:

var str ='/';
var a ='123//2';
a=a.replace(new RegExp(str,'g'),"1");

"123112"
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Replace all 3’s with 0’s:

'2017/12/13'.replace(/3/g, '0')
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