javascript 返回json对象
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/7211535/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
return json object
提问by dardub
I have an array of objects like
我有一系列的对象，比如
objArray = [{"color":"red", "width":5, "price":10},
{"color":"green", "width":4, "price":8},
{"color":"red", "width":7, "price":11}]
how can I return an array of objects where the color is red in javascript or jquery
如何在javascript或jquery中返回颜色为红色的对象数组
采纳答案by AlienWebguy
var objArray = [{"color":"red", "width":5, "price":10},
{"color":"green", "width":4, "price":8},
{"color":"red", "width":7, "price":11}]
var tmp = []
$.each(objArray,function(i,val){
if(val.color == 'red')
{
tmp.push(objArray[i]);
}
});
console.log(tmp);
回答by user113716
If by "return", you mean return from a function, then you can use Array.prototype.filterlike this:
如果“返回”是指从函数返回，则可以Array.prototype.filter像这样使用：
return objArray.filter(function(v) { return v.color === 'red'; });
If you just wanted to save it to a variable, then it's just about the same:
如果你只是想把它保存到一个变量中，那么它几乎是一样的：
var red_array = objArray.filter(function(v) { return v.color === 'red'; });
To cover for older browsers, use the MDN .filter()shim:
要覆盖旧浏览器，请使用MDN .filter()shim：
if (!Array.prototype.filter) {
Array.prototype.filter = function (fun /*, thisp */ ) {
"use strict";
if (this === void 0 || this === null) throw new TypeError();
var t = Object(this);
var len = t.length >>> 0;
if (typeof fun !== "function") throw new TypeError();
var res = [];
var thisp = arguments[1];
for (var i = 0; i < len; i++) {
if (i in t) {
var val = t[i]; // in case fun mutates this
if (fun.call(thisp, val, i, t)) res.push(val);
}
}
return res;
};
}
Or if you want jQuery, use the $.map()[docs]method :
或者，如果您想要 jQuery，请使用$.map()[docs]方法：
var arr = $.map( objArray, function(v) { if( v.color === 'red' ) return v; });
or the $.grep()[docs]method :
或$.grep()[docs]方法：
var arr = $.grep( objArray, function(v) { return v.color === 'red'; });
Examples:http://jsbin.com/udawir/edit#javascript,live(change the Array passed to $.each()to log the resulting color values)
示例：http : //jsbin.com/udawir/edit#javascript,live （更改传递给的数组$.each()以记录生成的颜色值）
回答by AmanDeepSharma
Short & Simple:
简短而简单：
let objArray = [ {"color":"red", "width":5, "price":10},
{"color":"green", "width":4, "price":8},
{"color":"red", "width":7, "price":11} ]
let newRedArray = objArray.filter(item => item.color === "red");
Hope it helps!
希望能帮助到你！
