【JS】deliver parameter in setInterval and setTimeout fun
function scroll(img_list, img_num) { var content = $(img_list); var w = content.find( 'li' ).outerWidth( true ); content.animate({ "margin-left" : parseInt(-w*this_index)}); this_index++; if (this_index >= img_num) this_index = 0; console.log(w); } setInterval( function () {<br> scroll( ".imgarea" , 3);<br> }, 2000); |
this is wrong
setInterval(scroll(".imgarea", 3), 2000); //wrong
you can change to this ,using anonymous function
setInterval(function() { //right
scroll(".imgarea", 3);
scroll(".imgarea", 3);
}, 2000);
it confused me for a longtime ,i always think my function made same mistake ,but after lot of tests and debug , i found there was something wrong with setInterval function .Remember this !
————★ From Laker's blog ★
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