CODEWITHSUNDEEP
javascript
clarkk
clarkk

Reputation: 1

eval() - syntax error

this code produce an syntax error.. but I can't figure out what is wrong?

alert(eval('('+this.responseText+')'));

EDIT:

      var _this = this;
        this.resource.open('POST', uri, true);
        this.resource.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
        this.resource.onreadystatechange = function(){
            if(this.readyState == 4){
                _this.clear_timeout();

                if(_this.loader){
                    Loader.dstr();
                }

                if(_this.rtn_func){
                    _this.rtn_func(eval('('+this.responseText+')'), _this.rtn_obj, _this.rtn_scope);
                }
            }
        };
        this.resource.send(get_str);

Upvotes: 0

Views: 2519

Answers (4)

Anand Thangappan
Anand Thangappan

Reputation: 3106

_this.rtn_func(eval('('+ this.responseText + ')'), _this.rtn_obj, _this.rtn_scope);

The eval is directly execute the script. Such as u have Response like 12 + 3 + 4

its form

eval('(12 + 3 + 4)')

this should be work. Are u try like that

Other wise if response text as return function name or else some string data its show error 

eval('(formdata())')

Upvotes: 1

Bharath
Bharath

Reputation: 807

Bracket is the cause. Try this.

alert(eval(this.responseText));

Upvotes: 0

Sai Kalyan Kumar Akshinthala
Sai Kalyan Kumar Akshinthala

Reputation: 11844

 a= eval("("+this.responseText+")");
 alert(a);

Try the above code part. Hope it will help.

Upvotes: 0

paxdiablo
paxdiablo

Reputation: 882426

You would have to check whether or not responseText is actually valid Javascript. Are you sure you didn't want to just display the string rather than execute it:

alert(this.responseText);

I should tell you that, unless you have total control over where this responseText is coming from, that's a hole big enough to fly an C130 aircraft through :-)

Upvotes: 1

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