JavaScript Json Create、Select、Delete、Update
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<!DOCTYPE html><html><head> <title>JavaScript Json Create、Select、Delete、Update</title> <script src="js/jquery-1.8.3.min.js"></script> <script type="text/javascript"> var json = "[]"; var arry_item = eval('(' + json + ')'); ///#BEGIN CREATE===================================================# //arry_item.push(arry_model):数组最后加一条记录 //arry_item.unshift(arry_model):数组最前面加一条记录 //document.writeln("") //支持IE8+ //Create 1 支持IE8+: //var arry_model = { 'tabid': '1000', 'tabname': '选项卡1', 'src': '/admin/index.html' }; //arry_item.push(arry_model); //Create 2 支持IE8+: arry_item.push({ 'tabid': '1000', 'tabname': '选项卡0', 'src': '0.html' }); arry_item.push({ 'tabid': '1001', 'tabname': '选项卡1', 'src': '1.html' }); arry_item.push({ 'tabid': '1002', 'tabname': '选项卡2', 'src': '2.html' }); arry_item.push({ 'tabid': '1003', 'tabname': '选项卡3', 'src': '3.html' }); ///#END CREATE===================================================# ///#BEGIN SELECT===================================================# //var arry_item_grep = $.grep(arry_item, function (item) { return item.tabid == 1000 && item.tabname == "选项卡0"; });//筛选tabid==100&&tabname==选项卡0的数组 //Json对象转字符串 str = JSON.stringify(arry_item) //Json字符串转Json对象 arr = JSON.parse(Json) //document.writeln(JSON.stringify(arry_item) + "<br/>"); //Select 1 支持IE8+: //for (var i = 0; i < arry_item.length; i++) { // document.writeln("tabid:" + arry_item[i].tabid + " | tablename:" + arry_item[i].tabname + " | src:" + arry_item[i].src + "<br/>"); //} //Select 2 支持IE8+:(需引用jQuery) //$.each(arry_item, function (i, item) { // document.writeln("tabid:" + item.tabid + " | tablename:" + item.tabname + " | src:" + item.src + "<br/>"); //}); //Select 3 支持IE9+: //arry_item.forEach(function (v, i, item) { // document.writeln("tabid:" + item[i].tabid + " | tablename:" + item[i].tabname + " | src:" + item[i].src + "<br/>"); //}); //Select 4 支持IE9+: //arry_item.map(function (v, i, item) { // document.writeln("tabid:" + item[i].tabid + " | tablename:" + item[i].tabname + " | src:" + item[i].src + "<br/>"); //}); ///#END SELECT===================================================# ///#BEGIN DELETE===================================================# //arry_item.pop();//删除最后一项 支持IE5+ //arry_item.shift();//删除第一项 支持IE5+ //arry_item.splice(0, 1);//删除指定对象(开始位置,删除个数) 支持IE5+ //DELETE 1 支持IE5+:删除tabid == 1000 || tabid == 1002 的数组 for (var i = 0; i < arry_item.length; i++) { if (arry_item[i].tabid == 1000 || arry_item[i].tabid == 1002) { arry_item.splice(i, 1); } } //DELETE 2 支持IE5+:清空数组 //arry_item.splice(0, arry_item.length); ///#END DELETE===================================================# ///#BEGIN UPDATE===================================================# //arry_item.splice(1, 0, e, f);//替换不删除(开始位置,删除个数,插入对象) 支持IE5+ //arry_item.splice(0, 1, e, f);//替换并删除(开始位置,删除个数,插入对象) 支持IE5+ ///#END UPDATE===================================================# document.writeln(JSON.stringify(arry_item) + "<br/>"); for (var i = 0; i < arry_item.length; i++) { document.writeln("tabid:" + arry_item[i].tabid + " | tablename:" + arry_item[i].tabname + " | src:" + arry_item[i].src + "<br/>"); } </script></head><body> <form id="form1" runat="server"> <div> </div> </form></body></html>
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