JS Automatic type conversion

Source: Internet
Author: User
Tags string to number


Testeq0 = NULL = = undefined;

testeq1 ="0"= =0; // convert string to number before comparison

testeq2 = 0 = = false ; // Compare Pre-Boolean conversions array

testeq3 = " 0 " == false ; // before comparison string and Boolean values are converted to arrays

Testeq4 = NaN = = undefined; //false

alert (TESTEQ4);


X +""; // equivalent to String (x)

+x; // equivalent to Number (x)

x - 0 ; //

!! x; // Double exclamation mark , equivalent to Boolean (x)


JS Automatic type conversion

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