How to convert a string into an object in js, array sample code _ javascript skills

This article describes how to convert a string into an object: convert text into an object and convert text into an array. The specific implementation is as follows. For more information, see, I hope to help you, for example

The Code is as follows:

Var test = '{colkey: "col", colsinfo: "NameList "}'

It is obviously an object, but how to convert text into an object. Use eval (); Be sure to add parentheses; otherwise, the conversion will fail.
Convert text into objects

The Code is as follows:

Var test = '{colkey: "col", colsinfo: "NameList "}'
Var obj2 = eval ("(" + test + ")");
Alert (obj2.colsinfo );

Convert text into an array

The Code is as follows:

Var test = '["colkey", "col", "colsinfo", "NameList"]'
Var obj2 = eval ("(" + test + ")");
Alert (obj2.length );