如何将json数组元素添加到另一个json数组的开头？

Question

所以，我有JSON数组：

var preferencecolModel={name:'all',index:'all', width:40, align:"left",resizable:false,sortable:false,editable:true};

我需要把它添加到另一个JSON数组的开始。

这就是我想要做的事：

$.merge(preferencecolModel,(data[0].PREFERENCESMODEL)); 
preferenceColModel = $.parseJSON(preferencecolModel); 

我很安静显然是错误的。 data[0].PREFERENCESMODEL来自数据库，看起来是这样的：

[{"name":"HTML_DEVICE_CNT","index":"HTML_DEVICE_CNT","width":35,"align":"center","editable":true,"sortable":false,"resizable":false,"title":true,"hidden":false,"widthOrg":35}, {"name":"edit","index":"edit","width":20,"align":"center","editable":true,"sortable":false,"resizable":false,"title":true,"hidden":false,"widthOrg":20}, {"name":"SPONSOR_CLASSIFICATION","index":"SPONSOR_CLASSIFICATION","width":35,"align":"center","editable":true,"sortable":false,"resizable":false,"title":true,"hidden":false,"widthOrg":35}, {"name":"ENT_EXCEPTION_QUEUE","index":"ENT_EXCEPTION_QUEUE","width":60,"align":"center","resizable":false,"title":true,"hidden":false,"widthOrg":60,"sortable":true}, {"name":"QIB","index":"QIB","width":30,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":30,"sortable":true}, {"name":"LAST_NAME","index":"LAST_NAME","width":120,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"FIRST_NAME","index":"FIRST_NAME","width":120,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"INSTITUTION_TYPE","index":"INSTITUTION_TYPE","width":120,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"INSTITUTION_NAME","index":"INSTITUTION_NAME","width":190,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":190,"sortable":true}, {"name":"EXEMPTION","index":"EXEMPTION","width":70,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":70,"sortable":true}, {"name":"GRAND_PARENT","index":"GRAND_PARENT","width":80,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":80,"sortable":true}, {"name":"GFCID","index":"GFCID","width":80,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":80,"sortable":true}, {"name":"CONTACTID","index":"CONTACTID","width":80,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":80,"sortable":true}, {"name":"CREATED_DATE","index":"CREATED_DATE","width":90,"align":"left","resizable":false,"formatter":"date","formatoptions":{"srcformat":"Y-m-d","newformat":"m-d-Y"},"title":true,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"TIERS","index":"TIERS","width":200,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":200,"sortable":true}, {"name":"EMAIL_ADDRESS","index":"EMAIL_ADDRESS","width":120,"align":"left","resizable":false,"title":false,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"ALTERNATE_EMAIL_ADDRESS","index":"ALTERNATE_EMAIL_ADDRESS","width":120,"align":"left","resizable":false,"title":false,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"REGION","index":"REGION","width":90,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"COUNTRY","index":"COUNTRY","width":90,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"VENDORS","index":"VENDORS","width":90,"align":"left","resizable":false,"title":false,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"ENT_QUEUE_LOCK_BY","index":"ENT_QUEUE_LOCK_BY","hidden":false,"width":90,"align":"left","resizable":false,"title":true,"widthOrg":90,"sortable":true}, {"name":"ENT_QUEUE_LOCK_DATE","index":"ENT_QUEUE_LOCK_DATE","hidden":false,"width":90,"align":"left","resizable":false,"title":true,"widthOrg":90,"sortable":true}]

我需要得到这个：

[{name:'all',index:'all', width:40,align:"left",resizable:false,sortable:false,editable:true},{"name":"HTML_DEVICE_CNT","index":"HTML_DEVICE_CNT","width":35,"align":"center","editable":true,"sortable":false,"resizable":false,"title":true,"hidden":false,"widthOrg":35}, {"name":"edit","index":"edit","width":20,"align":"center","editable":true,"sortable":false,"resizable":false,"title":true,"hidden":false,"widthOrg":20}, {"name":"SPONSOR_CLASSIFICATION","index":"SPONSOR_CLASSIFICATION","width":35,"align":"center","editable":true,"sortable":false,"resizable":false,"title":true,"hidden":false,"widthOrg":35}, {"name":"ENT_EXCEPTION_QUEUE","index":"ENT_EXCEPTION_QUEUE","width":60,"align":"center","resizable":false,"title":true,"hidden":false,"widthOrg":60,"sortable":true}, {"name":"QIB","index":"QIB","width":30,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":30,"sortable":true}, {"name":"LAST_NAME","index":"LAST_NAME","width":120,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"FIRST_NAME","index":"FIRST_NAME","width":120,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"INSTITUTION_TYPE","index":"INSTITUTION_TYPE","width":120,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"INSTITUTION_NAME","index":"INSTITUTION_NAME","width":190,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":190,"sortable":true}, {"name":"EXEMPTION","index":"EXEMPTION","width":70,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":70,"sortable":true}, {"name":"GRAND_PARENT","index":"GRAND_PARENT","width":80,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":80,"sortable":true}, {"name":"GFCID","index":"GFCID","width":80,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":80,"sortable":true}, {"name":"CONTACTID","index":"CONTACTID","width":80,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":80,"sortable":true}, {"name":"CREATED_DATE","index":"CREATED_DATE","width":90,"align":"left","resizable":false,"formatter":"date","formatoptions":{"srcformat":"Y-m-d","newformat":"m-d-Y"},"title":true,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"TIERS","index":"TIERS","width":200,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":200,"sortable":true}, {"name":"EMAIL_ADDRESS","index":"EMAIL_ADDRESS","width":120,"align":"left","resizable":false,"title":false,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"ALTERNATE_EMAIL_ADDRESS","index":"ALTERNATE_EMAIL_ADDRESS","width":120,"align":"left","resizable":false,"title":false,"hidden":false,"widthOrg":120,"sortable":true}, {"name":"REGION","index":"REGION","width":90,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"COUNTRY","index":"COUNTRY","width":90,"align":"left","resizable":false,"title":true,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"VENDORS","index":"VENDORS","width":90,"align":"left","resizable":false,"title":false,"hidden":false,"widthOrg":90,"sortable":true}, {"name":"ENT_QUEUE_LOCK_BY","index":"ENT_QUEUE_LOCK_BY","hidden":false,"width":90,"align":"left","resizable":false,"title":true,"widthOrg":90,"sortable":true}, {"name":"ENT_QUEUE_LOCK_DATE","index":"ENT_QUEUE_LOCK_DATE","hidden":false,"width":90,"align":"left","resizable":false,"title":true,"widthOrg":90,"sortable":true}]。

结果必须是JSON数组的形式，而不是字符串，因为它是jqGrid的colModel。

Answer 1

如果你有一个数组，例如data[0].PREFERENCESMODEL，你想在数组开头插入另一个项目preferencecolModel那么你可以使用unshift方法：

data[0].PREFERENCESMODEL.unshift(preferencecolModel); 

我没有看到任何label性质在colModel项目中。因此，您可能有另一个阵列与colNames项目，例如data[0].PREFERENCESCOLUMNNAMES。 jqGrid要求数组colModel和colNames具有相同的长度。因此您也必须在colNames中插入一个项目。例如，一个空字符串，这将显示在插入的列

data[0].PREFERENCESCOLUMNNAMES.unshift("");