I need to parse a json string with JSON.parse() but somethimes the input is not in the full format. for examle:
{
"x" : "x",
"x1" : "x1",
"x2" : "x2,
"x3" :
And the parsing is breaking obviously. But in this case I want to "save" the valid rows.
Is it possible?
Here is what you can do:
String.prototype.safeParser = function(){
try{
var that=this;
return JSON.parse(this);
}
catch(err){
if(this.length<3){
return {};
}
else if(this.charAt(this.length - 1) == "}"){
that = this.substring(0, this.length - 2) + "}";
}
else{
that = this.substring(0, this.length - 1) + "}";
}
return that.safeParser();
}
}
and use it like console.log(json_string.safeParser());
It checks whether the string is valid json, if it is not, it looks if it ends with curly braces, it removes one character at a time until it is valid json.
Note: this specific code only works for objects with curly braces, not arrays with square brackets. However, this might not be too hard to implement.
