jQuery IF 值等于显示 Else 显示

Question

我试图从输入中获取值，如果值= 1,2,3...则显示内容，否则如果值= 4,5,6...则显示其他内容。我几乎让它工作了然后什么东西坏了。我已经玩这个很多年了。谁能快速浏览一下并指出我在哪里损坏了它。

var amount = $(".quantity-wrapper > .input-text").val();
    if(amount = '1') {
        $('.product-addon-one-attendee').show();
    }
    if(amount = '2'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
    } 
    if(amount = '3'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
    } 
    if(amount = '4'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
    } 
    if(amount = '5'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
    }
    if(amount = '6'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
    }
    if(amount = '7'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
        $('.product-addon-seven-attendees').show();
    }
    if(amount = '8'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
        $('.product-addon-seven-attendees').show();
        $('.product-addon-eight-attendees').show();
    }
    if(amount = '9'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
        $('.product-addon-seven-attendees').show();
        $('.product-addon-eight-attendees').show();
        $('.product-addon-nine-attendees').show();
    }
    if(amount = '10'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
        $('.product-addon-seven-attendees').show();
        $('.product-addon-eight-attendees').show();
        $('.product-addon-nine-attendees').show();
        $('.product-addon-ten-attendees').show();
    }
    if(amount = '11'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
        $('.product-addon-seven-attendees').show();
        $('.product-addon-eight-attendees').show();
        $('.product-addon-nine-attendees').show();
        $('.product-addon-ten-attendees').show();
        $('.product-addon-eleven-attendees').show();
    }
    if(amount = '12'){
        $('.product-addon-one-attendee').show();
        $('.product-addon-two-attendees').show();
        $('.product-addon-three-attendees').show();
        $('.product-addon-four-attendees').show();
        $('.product-addon-five-attendees').show();
        $('.product-addon-six-attendees').show();
        $('.product-addon-seven-attendees').show();
        $('.product-addon-eight-attendees').show();
        $('.product-addon-nine-attendees').show();
        $('.product-addon-ten-attendees').show();
        $('.product-addon-eleven-attendees').show();
        $('.product-addon-twelve-attendees').show();
    }

Answer 1

if(amount = '8'){  // you forget ==

变化

if(amount == '8'){