Javascript array.splice 不是函数
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/31195240/
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
array.splice is not a function
提问by Juan Rangel
I am trying to remove an item from an array of unchecked with this bit of code.
我正在尝试使用这段代码从未经检查的数组中删除一个项目。
function filterSearch() {
var cats = [];
$('.filter-by-type input[type="checkbox"]').change(function() {
var cat = $(this).attr('name') + ', ';
if(this.checked) {
cats += cat;
} else {
cats.splice(cats.indexOf(cat), 1);
}
console.log(cats);
});
}
filterSearch();
I am getting the error Uncaught TypeError: cats.splice is not a function
我收到错误 Uncaught TypeError: cats.splice is not a function
Basically I want to add the value to the cats[]array if the item is checked and removed if unchecked. Any help would be appreciated.
基本上我想将值添加到cats[]数组，如果项目被选中，如果未选中则删除。任何帮助，将不胜感激。
回答by Walter Chapilliquen - wZVanG
catsis a array. Here:
cats是一个数组。这里：
if(this.checked) {
cats += cat;
^^
} else {
cats.splice(cats.indexOf(cat), 1);
}
You are trying to concatenate an array with the +=operator, catsis now a string, you should use the pushmethod instead.
您正在尝试将一个数组与+=运算符连接起来，cats现在是一个字符串，您应该改用push方法。
if(this.checked) {
cats.push(cat);
} else {
cats.splice(cats.indexOf(cat), 1);
}
