js和jQuery遍历json对象和数组

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javascript和jQuery遍历数组，json对象和json数组的多种方法。

/** jquery each()筛选遍历数组 */function eachArray(){ var anArray = ['zero','one','two']; $.each(anArray,function(index) { console.log(index);  }); $.each(anArray,function(index,value){ console.warn(index); console.warn(value); }); }/** jquery each()筛选遍历JSON数对象*/function eachJson(){var anObject = {one:1,two:2,three:3};$.each(anObject,function(key) { console.log(key);  }); $.each(anObject,function(key,value) { console.info(key); console.info(value); });}/** jquery each()筛选遍历JSON数数组*/function eachJsonArr(){var arr = [{one:1,two:2,three:3},{"A":1,B:2,C:3}];$.each(arr,function(index,value){ //这里的value就是上面的两个json对象，{}和{}console.info(value); $.each(value,function(key,value){console.info(key+":"+value);}); });}/* *js遍历json数组*/function jsonArr(){var arr = [{dd:'ww',AA:'东东',re1:123},{cccc:'dd',lk:'1qw'}]; for(var i=0,l=arr.length;i<l;i++){ for(key in arr[i]){ console.info(key+':'+arr[i][key]); } } }/* *js遍历json对象*/function jsonObj(){var json ={'name':'冯娟','password':'123456','department':'技术部','sex':' 女','old':30};for(key in json){ console.info(key+':'+json[key]); } }

还有一些不常用的方法

/* jquery grep()筛选遍历数组 ， * 将数组通过筛选，获得一个新的数组，遍历*/function grepArray(){var array = [1,2,3,4,5,6,7,8,9]; var filterarray = $.grep(array,function(value){ return value > 5;//筛选出大于5的 }); for(var i=0;i<filterarray.length;i++){ console.info(filterarray[i]); } for (key in filterarray){ console.warn(filterarray[key]);} }/** jquery inArray()筛选遍历数组 */function inArray(){var anArray = ['one','two','three']; var index = $.inArray('two',anArray); console.info(index);//返回该值在数组中的索引值，返回1 console.info(anArray[index]);//value is two }

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