Question

How to parse a string argument and returns an integer in JavaScript

Answer 1

// parseInt(string, radix);

document.write('parseInt("3.14") = ' + parseInt("3.14") + "<br />");  
document.write('parseInt("0.0314E+2") = ' + parseInt("0.0314E+2") + "<br />");  
document.write('parseInt("314e-2") = ' + parseInt("314e-2") + "<br />");  
document.write('parseInt("3.14Round") = ' + parseInt("3.14Round") + "<br />");  
document.write('parseInt("F35") = ' + parseInt("F35") + "<br />");  

 
/*
run

parseInt("3.14") = 3
parseInt("0.0314E+2") = 0
parseInt("314e-2") = 314
parseInt("3.14Round") = 3
parseInt("F35") = NaN
 
*/

 

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