How can I remove all text characters (not numbers or float) from a javascript variable ?
function deduct(){
var getamt= document.getElementById('cf').value; //eg: "Amount is 1000"
var value1 = 100;
var getamt2 = (value1-getamt);
document.getElementById('rf').value=getamt2;
}
I want getamt
as number. parseInt
is giving NaN
result.
You can replace the non-numbers
var str = "Amount is 1000"; var num = +str.replace(/[^0-9.]/g,""); console.log(num);
or you can match the number
var str = "Amount is 1000"; var match = str.match(/([0-9.])+/,""); var num = match ? +match[0] : 0; console.log(num);
The match could be more specific too
Use regular expression like this:
var getamt= document.getElementById('cf').value; //eg: Amount is 1000
var value1 = 100;
var getamt2 = value1 - getamt.replace( /\D+/g, ''); // this replaces all non-number characters in the string with nothing.
console.log(getamt2);
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