Issue with dynamically created variables

问题

I'm trying to dynamically access the different global variables (AvGen.svg1, AvGen.svg2 and so on) in the button event below, but by some reason it doesn't work even though the variable 'svg' becomes the same (e.g. AvGen.svg1) as putting AvGen.svg1 directly into the 'add' method.

How come it doesn't work?

AvGen = {

    currSvg: 0,
    svg1: null,
    svg1: null,

    init: function() {
        AvGen.loadSVG();
        AvGen.toolBox();
    },

    loadSVG: function() {
        AvGen.svg1 = [0,0,255.3,298.5,{type:'path',path:'M 35.3 257.2 C 34.4 245.7 45.4 234.1 48.5 223 C 53.6 204.3 55 185 60 166.2 C 69.5 131 69.6 97.1 89.1 65.1 C 103.4 41.7 129.5 5.3 161.3 19.7 C 184.6 30.3 181.3 59.2 188.9 78.9 C 207.5 127.3 228.6 184.8 230.3 237.3 C 231.3 268.6 202.8 261.3 178.2 264 C 149.2 267.1 120 269.6 91 272.2 C 84.2 272.8 75.8 274.2 69 273 C 60.9 271.6 28.9 259.9 31.3 249.2','fill':'#39b54a','stroke':'none','stroke-width':'0','fill-opacity':'1','stroke-opacity':'0'}];
        AvGen.svg2 = [0,0,278.9,314.1,{type:'path',path:'M 32 265 C 31.8 245.2 38 226.9 39.8 207.3 C 41.9 184.4 42 161.7 42 138.7 C 42 121.8 36.5 96.1 45.2 81.3 C 51.3 70.9 50.4 75.9 58 79.2 C 67.5 83.4 70.7 82.8 80.4 79 C 114.7 65.7 149.9 35.5 188.7 41.1 C 211.7 44.5 221.2 57.5 226.2 79.1 C 228.8 90.1 230.1 101.6 231.8 112.9 C 234.7 132.3 233.3 154.3 238.8 173 C 246.5 199.5 258.6 237.3 252 265.8 C 248.9 279.6 231.6 278.3 219.1 279.8 C 191.1 283 164 287 135.8 287 C 109.3 287 75.5 292.8 50 285.3 C 38.6 281.9 31.7 275.2 33 263','fill':'#8dc63f','stroke':'#8dc63f','stroke-miterlimit':'10','stroke-width':'0','fill-opacity':'1','stroke-opacity':'0'}];
        AvGen.paper = Raphael("avatarBox",300,300);
    },

    toolBox: function() {
       var moveRightBtn = $('#moveRightBtn');

        moveRightBtn.on('click', function(){
            AvGen.paper.clear();
            AvGen.currSvg += 1;

            var svg = 'AvGen.svg' + AvGen.currSvg;
            console.log(svg); // <--- AvGen.svg1
            AvGen.paper.add(svg);
            // AvGen.paper.add(AvGen.svg1); <--- works
        });
    },
};

EDIT: I get no error what so ever in the console when clicking the button.

回答1:

Try this:

AvGen = {

    currSvg: 0,
    svg: [],

    init: function() {
        AvGen.loadSVG();
        AvGen.toolBox();
    },

    loadSVG: function() {
        AvGen.svg.push([0,0,255.3,298.5,{type:'path',path:'M 35.3 257.2 C 34.4 245.7 45.4 234.1 48.5 223 C 53.6 204.3 55 185 60 166.2 C 69.5 131 69.6 97.1 89.1 65.1 C 103.4 41.7 129.5 5.3 161.3 19.7 C 184.6 30.3 181.3 59.2 188.9 78.9 C 207.5 127.3 228.6 184.8 230.3 237.3 C 231.3 268.6 202.8 261.3 178.2 264 C 149.2 267.1 120 269.6 91 272.2 C 84.2 272.8 75.8 274.2 69 273 C 60.9 271.6 28.9 259.9 31.3 249.2','fill':'#39b54a','stroke':'none','stroke-width':'0','fill-opacity':'1','stroke-opacity':'0'}]);
        AvGen.svg.push([0,0,278.9,314.1,{type:'path',path:'M 32 265 C 31.8 245.2 38 226.9 39.8 207.3 C 41.9 184.4 42 161.7 42 138.7 C 42 121.8 36.5 96.1 45.2 81.3 C 51.3 70.9 50.4 75.9 58 79.2 C 67.5 83.4 70.7 82.8 80.4 79 C 114.7 65.7 149.9 35.5 188.7 41.1 C 211.7 44.5 221.2 57.5 226.2 79.1 C 228.8 90.1 230.1 101.6 231.8 112.9 C 234.7 132.3 233.3 154.3 238.8 173 C 246.5 199.5 258.6 237.3 252 265.8 C 248.9 279.6 231.6 278.3 219.1 279.8 C 191.1 283 164 287 135.8 287 C 109.3 287 75.5 292.8 50 285.3 C 38.6 281.9 31.7 275.2 33 263','fill':'#8dc63f','stroke':'#8dc63f','stroke-miterlimit':'10','stroke-width':'0','fill-opacity':'1','stroke-opacity':'0'}]);
        AvGen.paper = Raphael("avatarBox",300,300);
    },

    toolBox: function() {

        moveRightBtn.on('click', function(){
            AvGen.paper.clear();
            AvGen.currSvg += 1;

            var svg = AvGen.svg[AvGen.currSvg-1];
            AvGen.paper.add(svg);
        });
    },
};

来源：https://stackoverflow.com/questions/17032251/issue-with-dynamically-created-variables

标签

jquery

click

dynamically-generated