A brief analysis of commonly used type conversion and operator expressions in JS

Common type conversion in JS (usually cast):

1. Force conversion to integer: parseInt; writing method:x = parseInt(x);

2. The cast bit is small: parseFloat; writing method:x = parseFloat(x);

3. Detection type:x = parseInt(x);       alert(typeof(true));

Common operator expressions in JS:

1. Logical operator (boolean): && and ;|| or ;! No ;

2. Comparison operator: == (equal to);! =(not equal to); > ; < ; >=(greater than or equal to); <=(less than or equal to);

3. Mathematical operators: + ; - ; * ; / ; % (take the remainder); += ; +- ;

4. Other operators: string splicing (numbers and strings);

For example:var s1 = "hello";　

var s2 = "lucy";

Triple operator: var x = judgment condition? Value 1; Value 2; For example: a==b?"A equals B":"A does not equal B";

The above is a brief analysis of commonly used type conversions and operator expressions in JS that the editor briefly introduces to you. I hope it will be helpful to you. If you have any questions, please leave a message. The editor will reply to you in time!