javascript - TypeError: Cannot read property '0' of undefined -


when call renderframe, trying access newline[i] throws error of 

uncaught typeerror: cannot read property '0' of undefined

why this? i've included relevant code.

rows : ["-","-","-","-","-","-","-","-","-","-",],  generateline : function(){     var result = new array(10);     for(var = 0; < result.length; i++){         result[i] = " ";     } },  renderframe : function(){     var newline = this.generateline();     for(var = 0; < this.rows.length; i++){         console.log(newline[i]);     } },

you forgot

return result;

at end of generateline()

so newline undefined. hence cannot read property '0' of undefined


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