javascript - If variable equals the number 1 -

i'm trying write simple if statement in jquery. if variable equals number 1 this, if equals number 2 this. wrote doesn't seem work , can't figure out why:

$("#next-btn").click(function() {     if (current_slide = 1) {         first_screen();     }, else if (current_slide = 2) {         second_screen();     }  }); 

probably simple, appreciate help.

you need use comparison operator == in if statement condition instead of assignment operator = remove comma after first closing curly bracket of then (true) block of if statement. can test on here.

if (current_slide == 1) {       first_screen(); } else if (current_slide == 2) {       second_screen(); }  

i assume current_slide has number compare, read below how comparison operator == performs comparison.

comparion equal operator

if 2 operands not of same type, javascript converts operands applies strict comparison. if either operand number or boolean, operands converted numbers if possible; else if either operand string, other operand converted string if possible. if both operands objects, javascript compares internal references equal when operands refer same object in memory, reference.