JQ and JS traversal JSON data method

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/* Author:liulf function var __DB_CPCJ=VCPCJ; var __DB_CP=VCP; var vcp={"Cppage": [ {"CPDH": "A01000101", "page": "1", "Ca": "1309-36-0", "MC": "Pyrite", "ename": "Pyrite", "BM": "Pyrite"}, {"CPDH": "A01000201", "page": "1", "Ca": "1309-36-0", "MC": "Sulfur fine Sand", "ename": "Pyrite concentrate; Sulfur concentrate "," BM ":" "}, {"CPDH": "A01000202", "page": "1", "Ca": "1309-36-0", "MC": "Sulfur concentrate powder", "ename": "Powdered pyrite Concentrate; Pyrites Concentrate,powder; Sulfur Concentrate,powder "," BM ":" Sulfur concentrates "}, {"CPDH": "A02000101", "page": "1", "Ca": "", "MC": "Phosphate Ore", "ename": "Phosphorus ore", "BM": ""}, {"CPDH": "A02000111", "page": "2", "Ca": "", "MC": "Phosphate Ore", "ename": "Phosphorite Grit", "BM": ""}, {"CPDH": "A02000201", "page": "2", "Ca": "", "MC": "Phosphate ore powder", "ename": "Phosphate Rock powder", "BM": ""}, {"CPDH": "A03000101", "page": "2", "Ca": "12447-04-0", "MC": "Boron ore", "ename": "Ascharite; Boric ore "," BM ":" Boron magnesium ore "}, {"CPDH": "A04000101", "page": "2", "Ca": "", "MC": "Potash feldspar", "ename": "Potash feldspar;" Potassium feldspars "," BM ":" "}, {"CPDH": "A04000201", "page": "2", "Ca": "12003-63-3", "MC": "Feldspar powder", "ename": "Feldspar powder", "BM": ""}, {"CPDH": "A04000301", "page": "2", "Ca": "", "MC": "Carnallite", "ename": "Carnallite", "BM": ""} ]} */ function Objsearch () { this.kw = "; this.searchcpcj= function () { $ (VCPCJ). each (function () { }); } THIS.SEARCHCP = function () { var json = eval (vcp.cppage) for (var i=0; i<json.length; i++) //        { Alert (json[i].cpdh+ "" + json[i].page) Break //        } $.each (Vcp.cppage,function (index,content) { document.write (' <div> ' +content.cpdh+ ' </div><br/> '); }); } }

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How do I traverse the Jsonc object? In fact, the method is very simple.

For example, you have the following JSON object:

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var obj ={"name": "Feng Juan", "Password": "123456″," "Department": "Technical department", "Sex": "female", "old": 30};

Traversal method:

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for (Var p in obj) { str = str+obj[p]+ ', '; return str; }