如何在默认情况下打开菜单？

Question

基本上我有一个滑出菜单，我想默认打开它，无法关闭。我尝试将其从open=true更改为open=false但没有任何反应。这是下面的代码。我想删除打开和关闭按钮，然后它将在HTML中“嵌入”。这是菜单的实际应用。 help.colourity.com。任何帮助将不胜感激

JS：

;( function( window ) {

    'use strict';

    function extend( a, b ) {
        for( var key in b ) { 
            if( b.hasOwnProperty( key ) ) {
                a[key] = b[key];
            }
        }
        return a;
    }

    // taken from https://github.com/inuyaksa/jquery.nicescroll/blob/master/jquery.nicescroll.js
    function hasParent( e, id ) {
        if (!e) return false;
        var el = e.target||e.srcElement||e||false;
        while (el && el.id != id) {
            el = el.parentNode||false;
        }
        return (el!==false);
    }

    // returns the depth of the element "e" relative to element with id=id
    // for this calculation only parents with classname = waypoint are considered
    function getLevelDepth( e, id, waypoint, cnt ) {
        cnt = cnt || 0;
        if ( e.id.indexOf( id ) >= 0 ) return cnt;
        if( classie.has( e, waypoint ) ) {
            ++cnt;
    }
    return e.parentNode && getLevelDepth( e.parentNode, id, waypoint, cnt );
}

// http://coveroverflow.com/a/11381730/989439
function mobilecheck() {
    var check = false;
    (function(a){if(/(android|ipad|playbook|silk|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))check = true})(navigator.userAgent||navigator.vendor||window.opera);
    return check;
}

// returns the closest element to 'e' that has class "classname"
function closest( e, classname ) {
    if( classie.has( e, classname ) ) {
        return e;
    }
    return e.parentNode && closest( e.parentNode, classname );
}

function mlPushMenu( el, trigger, options ) {   
    this.el = el;
    this.trigger = trigger;
    this.options = extend( this.defaults, options );
    // support 3d transforms
    this.support = Modernizr.csstransforms3d;
    if( this.support ) {
        this._init();
    }
}

mlPushMenu.prototype = {
    defaults : {
        // overlap: there will be a gap between open levels
        // cover: the open levels will be on top of any previous open level
        type : 'overlap', // overlap || cover
        // space between each overlaped level
        levelSpacing : 40,
        // classname for the element (if any) that when clicked closes the current level
        backClass : 'mp-back'
    },
    _init : function() {
        // if menu is open or not
        this.open = false;
        // level depth
        this.level = 0;
        // the moving wrapper
        this.wrapper = document.getElementById( 'mp-pusher' );
        // the mp-level elements
        this.levels = Array.prototype.slice.call( this.el.querySelectorAll( 'div.mp-level' ) );
        // save the depth of each of these mp-level elements
        var self = this;
        this.levels.forEach( function( el, i ) { el.setAttribute( 'data-level', getLevelDepth( el, self.el.id, 'mp-level' ) ); } );
        // the menu items
        this.menuItems = Array.prototype.slice.call( this.el.querySelectorAll( 'li' ) );
        // if type == "cover" these will serve as hooks to move back to the previous level
        this.levelBack = Array.prototype.slice.call( this.el.querySelectorAll( '.' + this.options.backClass ) );
        // event type (if mobile use touch events)
        this.eventtype = mobilecheck() ? 'touchstart' : 'click';
        // add the class mp-overlap or mp-cover to the main element depending on options.type
        classie.add( this.el, 'mp-' + this.options.type );
        // initialize / bind the necessary events
        this._initEvents();
    },
    _initEvents : function() {
        var self = this;

        // the menu should close if clicking somewhere on the body
        var bodyClickFn = function( el ) {
            self._resetMenu();
            el.removeEventListener( self.eventtype, bodyClickFn );
        };

        // open (or close) the menu
        this.trigger.addEventListener( this.eventtype, function( ev ) {
            ev.stopPropagation();
            ev.preventDefault();
            if( self.open ) {
                self._resetMenu();
            }
            else {
                self._openMenu();
                // the menu should close if clicking somewhere on the body (excluding clicks on the menu)
                document.addEventListener( self.eventtype, function( ev ) {
                    if( self.open && !hasParent( ev.target, self.el.id ) ) {
                        bodyClickFn( this );
                    }
                } );
            }
        } );

        // opening a sub level menu
        this.menuItems.forEach( function( el, i ) {
            // check if it has a sub level
            var subLevel = el.querySelector( 'div.mp-level' );
            if( subLevel ) {
                el.querySelector( 'a' ).addEventListener( self.eventtype, function( ev ) {
                    ev.preventDefault();
                    var level = closest( el, 'mp-level' ).getAttribute( 'data-level' );
                    if( self.level <= level ) {
                        ev.stopPropagation();
                        classie.add( closest( el, 'mp-level' ), 'mp-level-overlay' );
                        self._openMenu( subLevel );
                    }
                } );
            }
        } );

        // closing the sub levels :
        // by clicking on the visible part of the level element
        this.levels.forEach( function( el, i ) {
            el.addEventListener( self.eventtype, function( ev ) {
                ev.stopPropagation();
                var level = el.getAttribute( 'data-level' );
                if( self.level > level ) {
                    self.level = level;
                    self._closeMenu();
                }
            } );
        } );

        // by clicking on a specific element
        this.levelBack.forEach( function( el, i ) {
            el.addEventListener( self.eventtype, function( ev ) {
                ev.preventDefault();
                var level = closest( el, 'mp-level' ).getAttribute( 'data-level' );
                if( self.level <= level ) {
                    ev.stopPropagation();
                    self.level = closest( el, 'mp-level' ).getAttribute( 'data-level' ) - 1;
                    self.level === 0 ? self._resetMenu() : self._closeMenu();
                }
            } );
        } );    
    },
    _openMenu : function( subLevel ) {
        // increment level depth
        ++this.level;

        // move the main wrapper
        var levelFactor = ( this.level - 1 ) * this.options.levelSpacing,
            translateVal = this.options.type === 'overlap' ? this.el.offsetWidth + levelFactor : this.el.offsetWidth;

        this._setTransform( 'translate3d(' + translateVal + 'px,0,0)' );

        if( subLevel ) {
            // reset transform for sublevel
            this._setTransform( '', subLevel );
            // need to reset the translate value for the level menus that have the same level depth and are not open
            for( var i = 0, len = this.levels.length; i < len; ++i ) {
                var levelEl = this.levels[i];
                if( levelEl != subLevel && !classie.has( levelEl, 'mp-level-open' ) ) {
                    this._setTransform( 'translate3d(-100%,0,0) translate3d(' + -1*levelFactor + 'px,0,0)', levelEl );
                }
            }
        }
        // add class mp-pushed to main wrapper if opening the first time
        if( this.level === 1 ) {
            classie.add( this.wrapper, 'mp-pushed' );
            this.open = true;
        }
        // add class mp-level-open to the opening level element
        classie.add( subLevel || this.levels[0], 'mp-level-open' );
    },
    // close the menu
    _resetMenu : function() {
        this._setTransform('translate3d(0,0,0)');
        this.level = 0;
        // remove class mp-pushed from main wrapper
        classie.remove( this.wrapper, 'mp-pushed' );
        this._toggleLevels();
        this.open = false;
    },
    // close sub menus
    _closeMenu : function() {
        var translateVal = this.options.type === 'overlap' ? this.el.offsetWidth + ( this.level - 1 ) * this.options.levelSpacing : this.el.offsetWidth;
        this._setTransform( 'translate3d(' + translateVal + 'px,0,0)' );
        this._toggleLevels();
    },
    // translate the el
    _setTransform : function( val, el ) {
        el = el || this.wrapper;
        el.style.WebkitTransform = val;
        el.style.MozTransform = val;
        el.style.transform = val;
    },
    // removes classes mp-level-open from closing levels
    _toggleLevels : function() {
        for( var i = 0, len = this.levels.length; i < len; ++i ) {
            var levelEl = this.levels[i];
            if( levelEl.getAttribute( 'data-level' ) >= this.level + 1 ) {
                classie.remove( levelEl, 'mp-level-open' );
                classie.remove( levelEl, 'mp-level-overlay' );
            }
            else if( Number( levelEl.getAttribute( 'data-level' ) ) == this.level ) {
                classie.remove( levelEl, 'mp-level-overlay' );
            }
        }
    }
}

// add to global namespace
window.mlPushMenu = mlPushMenu;

} )( window );

Answer 1

看起来你正在使用mlpushmenu。 调用._openMenu（）使菜单在开始时打开。

        var menu = new mlPushMenu( 
            document.getElementById( 'mp-menu' ), 
            document.getElementById( 'trigger' ));
        menu._openMenu();

之后删除关闭菜单的所有按钮。