jQuery_分享扩展

function share() {
    var isOpen = false //标识当前的状态（初始为关闭）
    var $shareMore = $(‘#shareMore‘)
    var $parent = $shareMore.parent()
    var $as = $shareMore.prevAll(‘a:lt(2)‘)
    var $b = $shareMore.children()
    
    $shareMore.click(function () {
        if (isOpen){//去关闭
            isOpen = false
            $parent.css(‘width‘,155)
            $as.hide()
            $b.removeClass(‘backword‘)
        } else {//去打开
            isOpen = true
            $parent.css(‘width‘,200)
            $as.show()
            $b.addClass(‘backword‘)
        }
    })
}