带有es6的map函数中的条件语句 [英] Conditional Statement in a map function with es6

问题描述

我需要在map函数中使用条件语句

I nee to use the conditional statement in a map function

我正在复制SVG中path d的每个单个值，但是我不希望数组的对象M和L发生这种情况

I am duplicating each single value of a path d in a SVG but i do not want this happening for the objects M and L of the array

这是数组作为字符串的示例.

Here is an example of the array as string.

M 175 0 L 326.55444566227675 87.50000000000001 L 326.55444566227675 262.5 L 175 350 L 23.445554337723223 262.5 L 23.44555433772325 87.49999999999999 L 175 0

这是我的情况下没有条件陈述的示例

This is an example to my case without the conditional statement

let neWd = array.map(x => { return x * 2; }).reverse().join(' ')

如何在 e6 中写下呢?我不希望元素L和M发生相乘(类似if x ? 'M' : 'L' return)

how can i write down this in e6 ? I don not want the multiplication happening for the elements L and M ( something like if x ? 'M' : 'L' return )

推荐答案

我不确定为什么还要使用reverse函数，反转svg路径会稍微复杂些.

I'm not sure why your using the reverse function also, reversing the svg path is slightly more complicated.

此代码段将所有数字加倍，但保持M和L不变.

This code snippet doubles all the numbers, but leaves M and L intact.

实际上将svg路径扩大了200％

In effect scaling up the svg path by 200%

var array = "M 175 0 L 326.55444566227675 87.50000000000001 L 326.55444566227675 262.5 L 175 350 L 23.445554337723223 262.5 L 23.44555433772325 87.49999999999999 L 175 0".split(" ");

let neWd = array.map(x => {
	if (x === 'M' || x === 'L'){
		return x;
	}else{
		return x * 2;
	}
}).join(' ')

console.log(neWd);

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