BrainFuck Javascript Compiler

gistfile1.js

var strip=[0];
var index=0;
var loopStack=new Array();
var loopFlag=0;
var innerLoopCount=0;
input=document.getElementById('inp').value;
for(i=0;i<input.length;i++){
	var element=input[i];
	if(loopFlag==1){
		if(element=='[')
			innerLoopCount++;
		else if(element==']'){
			if(innerLoopCount==0)
				loopFlag=0;
			else
				innerLoopCount--;
		}
		continue;
	}
	switch(element){
		case '+':
			strip[index]++;
			break;
		case '-':
			strip[index]--;
			break;
		case ',':
			temp=prompt();
			strip[index]=temp && temp.charCodeAt(0)||0;
			console.log(strip[index]);//its ascii value
			break;
		case '.':
			document.getElementById("out").innerHTML+=String.fromCharCode(strip[index])||0;
			break;
		case '>':
			index+=1;
			strip[index]=strip[index]||0;
			break;
		case '<':
			index-=1;
			strip[index]=strip[index]||0;
			//if (index<0) {alert("Array-Out-Of-Bound-Exception:\ncrossed the left end of the strip");return false;};//Finite start
			break;
		case '[':
			if(strip[index]==0)
				loopFlag=1;
			else
				loopStack.push(i);
			break;
		case ']':
			if(strip[index]!=0)
				i=loopStack[loopStack.length-1];
			else
				loopStack.pop();
			break;
		default:
			break;
	}
}

Prints what you type

,[.,]

Hello World

++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.

bugs

1. cant detect \n with \0
2. prompt might be annoying at times