Possible Duplicates: Javascript === vs == : Does it matter which “equal” operator I use? Javascript operator !== Look at this commit Is != same as !== in JavaScript? [1]: They are subtly not the same. != checks the value !== checks the value and type '1' != 1 // false (these two are the same) '1' !== 1 // true (these two are **not** the same). In the previous example. The fir
可能重复： Javascript === vs ==：这与我使用的“平等”运算符有关吗？ Javascript运算符！== 看看这个提交 在JavaScript中是!=与!==相同吗？ [1]： 他们微妙地不一样。 !=检查值 !==检查值和类型 '1' != 1 // false (these two are the same) '1' !== 1 // true (these two are **not** the same). 在前面的例子中。 表达式的前半部分是一个字符串，后半部分是一个整数。 从 http://en.wikipedia.org/w
Possible Duplicate: Javascript === vs == What's the diff between "===" and "==" ? Thanks! '===' means equality without type coersion. In other words, if using the triple equals, the values must be equal in type as well. eg 0==false // true 0===false // false, because they are of a different type 1=="1" // true, auto type coersion 1==="1" // fal
可能重复： Javascript === vs == “===”和“==”之间的差异是什么？ 谢谢！ '==='意思是没有类型转换的平等。 换句话说，如果使用三元等值，那么值的类型也必须相同。 例如 0==false // true 0===false // false, because they are of a different type 1=="1" // true, auto type coersion 1==="1" // false, because they are of a different type 资料来源：http://longgoldenears.blogspot.com/
I read the following objects using Ajax and stored them in an array: var homes = [ { "h_id": "3", "city": "Dallas", "state": "TX", "zip": "75201", "price": "162500" }, { "h_id": "4", "city": "Bevery Hills", "state": "CA", "zip": "90210", "price": "319250" }, { "h_id": "5", "city": "New Yor
我使用Ajax读取以下对象并将它们存储在数组中： var homes = [ { "h_id": "3", "city": "Dallas", "state": "TX", "zip": "75201", "price": "162500" }, { "h_id": "4", "city": "Bevery Hills", "state": "CA", "zip": "90210", "price": "319250" }, { "h_id": "5", "city": "New York", "state": "NY
From this original question, how would I apply a sort on multiple fields? Using this slightly adapted structure, how would I sort city (ascending) & then price (descending)? var homes = [ {"h_id":"3", "city":"Dallas", "state":"TX", "zip":"75201", "price":"162500"}, {"h_id":"4", "city":"Bevery Hills", "state":"CA", "zip":"90210", "price":"3192
从这个原始问题，我将如何应用在多个领域的排序？ 使用这个稍微适应的结构，我将如何对城市（升序）和价格（降序）进行分类？ var homes = [ {"h_id":"3", "city":"Dallas", "state":"TX", "zip":"75201", "price":"162500"}, {"h_id":"4", "city":"Bevery Hills", "state":"CA", "zip":"90210", "price":"319250"}, {"h_id":"6", "city":"Dallas", "state":"T
I found a great method to sort an array of objects based on one of the properties as defined at: Sort array of objects by string property value in JavaScript Using that function works perfectly for a single sort (on all browsers), and even a sort within another sort EXCEPT using Google Chrome! Here is Ege Özcan's great sort routine for arrays of objects function dynamicSort(property) {
我发现了一个很好的方法来基于以下定义的属性之一对对象数组进行排序： 在JavaScript中按字符串属性值排序对象数组 使用该功能对于单一排序（在所有浏览器上）都是完美的，甚至可以在另一种排序中使用谷歌浏览器！ 这是EgeÖzcan对物体阵列的伟大排序例程 function dynamicSort(property) { return function (a,b) { return (a[property] < b[property]) ? -1 : (a[property] > b[property]) ? 1 : 0;
This question already has an answer here: How do I remove a particular element from an array in JavaScript? 62 answers You need to use slice(0,3) to slice out between indexes 0 and 3, obtaining indexes 0,1,2. That's [5,10,15] . You seem to just want to truncate the array. The simplest way is to set its length : array.length = 3; If you were doing that based on an index (say, index
这个问题在这里已经有了答案： 如何从JavaScript中的数组中删除特定的元素？ 62个答案 您需要使用slice(0,3)在索引0和3之间切片，以获得索引0,1,2。 这是[5,10,15] 。 你似乎只想截断数组。 最简单的方法是设置其length ： array.length = 3; 如果你是基于索引（比如index = 2 ）来做的话，那么你需要添加一个来获得长度，因为数组是基于0的： array.length = index + 1; 如果你想获得一个元素的子集作为一个新的数
This question already has an answer here: How do I remove a particular element from an array in JavaScript? 62 answers You could use Array#splice . The splice() method changes the content of an array by removing existing elements and/or adding new elements. data.parameters.splice(1, 1) // index // \ length
这个问题在这里已经有了答案： 如何从JavaScript中的数组中删除特定的元素？ 62个答案 你可以使用Array#splice 。 splice()方法通过删除现有元素和/或添加新元素来更改数组的内容。 data.parameters.splice(1, 1) // index // \ length
This question already has an answer here: How do I remove a particular element from an array in JavaScript? 62 answers 试试这可能对你有帮助function arr_diff(a1, a2) { var a=[], diff=[]; for(var i=0;i<a1.length;i++) a[a1[i]]=true; for(var i=0;i<a2.length;i++) if(a[a2[i]]) delete a[a2[i]]; else a[a2[i]]=true; for(var k in a) diff.push(k); return diff; } var a = [
这个问题在这里已经有了答案： 如何从JavaScript中的数组中删除特定的元素？ 62个答案 试试这可能对你有帮助function arr_diff(a1, a2) { var a=[], diff=[]; for(var i=0;i<a1.length;i++) a[a1[i]]=true; for(var i=0;i<a2.length;i++) if(a[a2[i]]) delete a[a2[i]]; else a[a2[i]]=true; for(var k in a) diff.push(k); return diff; } var a = [1,2,3,4,5,6] var b = [2,3] console.log
This question already has an answer here: How do I remove a particular element from an array in JavaScript? 62 answers var hey = arrayName.splice(1,1); 编辑：如果您希望获得特定值的索引，则可以使用： arrayName.indexOf("hey");
这个问题在这里已经有了答案： 如何从JavaScript中的数组中删除特定的元素？ 62个答案 var hey = arrayName.splice(1,1); 编辑：如果您希望获得特定值的索引，则可以使用： arrayName.indexOf("hey");
This question already has an answer here: How do I remove a particular element from an array in JavaScript? 62 answers You are using elements.slice(R3,1) wrong. Second argument means not the length of the array you want to get, but the zero-based index of the element when slice method should stop. So your code is saying "Give me elements from index R3 till index 1", and the only
这个问题在这里已经有了答案： 如何从JavaScript中的数组中删除特定的元素？ 62个答案 您正在使用elements.slice(R3,1)错误。 第二个参数的意思不是你想要获得的数组的长度，而是当slice方法应该停止时元素的从零开始的索引。 所以你的代码是说“给我索引R3的元素，直到索引1”，并且它是唯一一次工作： elements.slice(0, 1) 。 如果你只需要获得一个元素 - 使用elements[R1] 。 如果你需要使用一个元素来获得数组，你可