javascript – jquery中的“Uncaught SyntaxError：Unexpected identifier”错误

我正在制作一个新的jQuery插件,用于在页面上绘制线条.
问题是我无法弄清楚这里发生了什么,当我运行脚本时,在Chrome中它说：

"Uncaught SyntaxError: Unexpected identifier"

在第8行到最后一行(读取：$.line();).

整个代码：

(function( $) {

    $.fn.line = function(coordinates) {

        var bothpoints;

        $.fn.line.draw = function() {

            var lineColor = $('#lineRegion').attr('lineColor');

            if (!lineColor) {
                var colors = ['black','blue','green','red','yellow','purple','magenta','cyan'];

                $('img.line').each(function () {
                    colors.splice(colors.indexOf($(this).css('color')),1);
                });

                var lineColor = colors[0];

            }

            var data = $.line.data(),width = Math.abs(data[0] - data[2]),height = Math.abs(data[1] - data[3]);
            if (data[0] >> data[2]) {
                var lineleft = data[2];
            } else {
                var lineleft = data[0];
            }
            if (data[1] >> data[3]) {
                var linetop = data[1];
            } else {
                var linetop = data[3];
            }

            $('body').append('<img class="line" src="/lines/line-'+lineColor+'.png" style="position:absolute;top:'+linetop+';left:'+lineleft+';width:'+width+'px;height:'+height+'px;color:'+lineColor+';"/>');
        }

        $.fn.line.data = function(coords) {
            if (coords.length == 2) {
                if ( ! $('#line').data('point1') ) { 
                    $('#line').data('point1',{x: coords[0],y: coords[1]});
                    bothpoints = false;
                } else {
                    $('#line').data('point2',y: coords[1]});
                    bothpoints = true;
                }
                $.line.draw();
            } else if (coords == 1) {
                $('#line').data('point1',false);
                bothpoints = false;
            } else if (coords == 2) {
                $('#line').data('point2',false);
                bothpoints = false;
            } else if (!coords) {
                return [$('#line').data('point1').x,$('#line').data('point1').y,$('#line').data('point2').x,$('#line').data('point2').y];
            }
        }

        $.fn.line.point = function() {
            if (!($.line.data().length == 4)) {
                var _posY = posy,_posX = posx;
                $('body').append('<div class="point" style="position:absolute; top:' + _posY + 'px; left:' + _posX + 'px;"></div>');
                $.line.data([_posX,_posY]);
                if (bothpoints == true) {
                    $.line.draw();
                }
            }
        }

        $.fn.line.unpoint = function() {
            this.hide('fast');
            if ($.line.data()[0] == this.offset()['left'] && $.line.data[1] == this.offset()['top']) {
                $.line.data(1);
            } else {
                $.line.data(2);
            }
            $.line.erase();
        }


        $.fn.line.erase = function(total) {
            if (total == true) {
                $('img.line').hide('fast');
                $('div.point').hide('fast');
                $.line.data(1);
                $.line.data(2);
            } else {
                $('img.line').hide('fast');
            }
        }

        if ( coordinates.length == 4) {
            $.line.data([coordinates[0],coordinates[1]]);
            $.line.data([coordinates[2],coordinates[3]]);
            $.line.draw();
        }

    };

    var posx,posy;

    $(document).ready(function(){
        $(document).on('mousemove',function(e) {
            if (!e) var e = window.event;
            if (e.pageX || e.pageY)     {
                posx = e.pageX;
                posy = e.pageY;
            }
            else if (e.clientX || e.clientY)    {
                posx = e.clientX + document.body.scrollLeft
                    + document.documentElement.scrollLeft;
                posy = e.clientY + document.body.scrollTop
                    + document.documentElement.scrollTop;
            }
        }
        $.line();
        $('head').append('<Meta id="line" />');
        $('#lineRegion').click( $.line.point() );
        $('.point').click( $.line.unpoint() );
        $('.lineEraser').click( $.line.erase(true) );
    }

})( jQuery );

解决方法

你启动一个内联函数：$(document).on(‘mousemove’,function(e){并且永远不会在它之后完成语句.在出错之前,你需要});而不只是}.