如何从在JavaScript foreach循环中删除特定数组元素 [英] How to delete specific array elements from within a foreach loop in javascript

问题描述

  VAR果= [苹果，梨花，黄花梨，梨花，香蕉];
 

我如何从这个数组中删除所有的鸭梨水果？结果
我尝试以下，但还有一梨仍然是：

 为（以水果变种F）{
    如果（水果[F] ==鸭梨）{
        fruit.splice（F，1）;
    }
}对于（水果变种F）{
    的document.write（水果[F] +＆LT; BR＆gt;中）;
}
 

输出：

 苹果
梨
香蕉
 

我是什么做错了吗？现场演示： http://jsfiddle.net/SbxHc/

解决方案

  VAR果= [苹果，梨花，黄花梨，梨花，香蕉] ，
    一世;对于（i = 0; I＆LT; fruit.length ++我）{
    如果（水果[I] ===鸭梨）{
        fruit.splice（我 - ，1）;
    }
}的console.log（水果）;
// [苹果，香蕉]
 

var fruit = ["apple","pear","pear","pear","banana"];

How do I remove all "pear" fruit from this array?
I tried the following, but still one pear remains:

for(var f in fruit) {
    if ( fruit[f] == "pear" ) {
        fruit.splice(f, 1);
    }
}

for(var f in fruit) {
    document.write(fruit[f]+"<br>");        
}

Outputs:

apple 
pear 
banana

​What am I doing wrong? Live demo: http://jsfiddle.net/SbxHc/

解决方案

var fruit = ["apple", "pear", "pear", "pear", "banana"],
    i;

for (i = 0; i < fruit.length; ++i) {
    if (fruit[i] === "pear") {
        fruit.splice(i--, 1);
    }
}

console.log(fruit);
//["apple", "banana"]

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