json字符串、json对象、数组 三者之间的转换

json字符串转化成json对象

// jquery的方法
var jsonObj = $.parseJSON(jsonStr)
//js 的方法
var jsonObj =  JSON.parse(jsonStr)

json对象转化成json字符串

//js方法
var jsonStr1 = JSON.stringify(jsonObj)

例如

<script type="text/javascript">
var jsonStr = '[{"id":"01","open":false,"pId":"0","name":"A部门"},{"id":"01","open":false,"pId":"0","name":"A部门"},{"id":"011","open":false,"pId":"01","name":"A部门"},{"id":"03","open":false,"pId":"0","name":"A部门"},{"id":"04","open":false,"pId":"0","name":"A部门"}, {"id":"05","open":false,"pId":"0","name":"A部门"}, {"id":"06","open":false,"pId":"0","name":"A部门"}]';
//  var jsonObj = $.parseJSON(jsonStr);
var jsonObj =  JSON.parse(jsonStr)
console.log(jsonObj)
var jsonStr1 = JSON.stringify(jsonObj)
console.log(jsonStr1+"jsonStr1")
</script>

json对象转化成数组

<script type="text/javascript">
var jsonStr = '[{"id":"01","open":false,"pId":"0","name":"A部门"},{"id":"01","open":false,"pId":"0","name":"A部门"},{"id":"011","open":false,"pId":"01","name":"A部门"},{"id":"03","open":false,"pId":"0","name":"A部门"},{"id":"04","open":false,"pId":"0","name":"A部门"}, {"id":"05","open":false,"pId":"0","name":"A部门"}, {"id":"06","open":false,"pId":"0","name":"A部门"}]';
//  var jsonObj = $.parseJSON(jsonStr);
var jsonObj =  JSON.parse(jsonStr)
console.log(jsonObj)
var jsonStr1 = JSON.stringify(jsonObj)
console.log(jsonStr1+"jsonStr1")
var jsonArr = [];
for(var i =0 ;i < jsonObj.length;i++){
jsonArr[i] = jsonObj[i];
}
console.log(typeof(jsonArr))
</script>