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JavaScript

var json_array = [{ "text": "id", "size": 4}, { "text": "manifesto", "size": 4}, { "text": "also", "size": 4}, { "text": "leasing", "size": 4}, { "text": "23", "size": 4}];


var t_array = [];

t_array[0]=json_array[0].text;
t_array[1]=json_array[1].text;
t_array[2]=json_array[2].text;
alert(t_array);