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覆巢之下焉有完卵。出来道上混,迟早是要还的。

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js判断一个值是否在数组中

2017-10-06 17:56:31| 分类： jquery | 标签： |举报 |字号大中小订阅

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if ( -1 == $.inArray(new_value,old_array)){

old_array.push(new_value);//alert(new_value+"此值不存在于数组");

}

jQuery.inArray( value, array [, fromIndex ] )

在数组中查找指定值并返回它的索引（如果没有找到，则返回-1）。

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