我有json的对象数组。我构建我的页面取决于此数组中的元素。如果没有重复的键称为点的值,我使用一些信息和描述呈现页面,使用点的值在数组中查找此元素。但是,如果我有2个或更多的重复键值称为点我渲染这些元素的列表。在这种情况下,我不能使用点的值来查找数组中的元素。我知道我可以使用数组元素的索引号,然后将其作为参数传递给我的查找和构建信息和描述的函数,但我不知道该怎么做。我如何得到数组中元素的索引号?
P.S。如果需要可以提供我的代码
我正在使用的代码
var allRewards = null;
$("#reward").live('pagecreate', function(e) {
var request = $.ajax({
type: "GET",
url: "example.com/test.json"
dataType: "json",
error: function (data, textStatus){
console.log( "it`s error" );
console.log( status );
console.log( data );},
success: function (data, textStatus){
console.log( "success" );
console.log( status );
console.log( data );
}
})
request.success(function(data, textStatus){
var lis = "";
var arr = [];
var iter = 0;
allRewards = data
$.each(data.rewards, function(key, val){
if ($.inArray(val.points, arr) == -1)
{
lis += "<div data-points='"+ val.points +"'align=CENTER class = 'rewards-block ui-block-" + String.fromCharCode(97 + iter%3) + "'><a href ='#' class ='ui-link-inherit' onclick='showreward("+val.points+")'><img src ='./img/reward-icon.png'/><span>" + val.points + " pts</span></a></div>";
arr.push(val.points);
iter += 1;
}
});
$("#rewards_table").html(lis);
})
});
function showreward(point)
{
$.mobile.changePage('show-rewards.html')
console.log(allRewards);
$("#showrewards").live('pagecreate', function(e) {
var items = "";
var arr = [];
var counter = 0;
var result = $.grep(allRewards.rewards, function(e){ return e.points == point; });
if (result.length > 1)
{
$.each(result, function(key, val){
items += "<div style='color:white;'>" + val.title + "</div>"
console.log(val.title);
})
}
else if (result.length == 1)
{
// $.each(result, function(key, val){
// items += "div style='color:white;'"+ val.points + "></div>"
// console.log(val.points);
// })
$.each(result, function(key, val){
items += "<div style='background:white; padding:5px 5px 20px 5px;'><img style ='float:right; width:45%; margin-top:22px; padding: 0 0 10px 10px;' src ='" + val.main_photo_url + "'/><h3>"+ val.title + "</h3><p>" + val.description + "</p><p style='font-weight:bold; font-size:13px;'>Reedem below for " + val.points + " Zingle Points</p><table class='pagemenu' style='width:200px;'><tr><td class='width_5'><input type='submit' data-theme='w' value='Reedem Now' data-inline='true'></td><td><a data-role='button' data-icon='pagemenu-share' data-iconpos='notext' href='index.html' data-shadow='false' data-corners='false'></a></td></tr></table></div>"
});
}
console.log(items);
$("#rewards-list").html(items);
});
}
答案 0 :(得分:3)
我认为你正在寻找Array.indexOf
。
https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/indexOf
PS。这在下划线中可用_.indexOf
。