[提取图片array前缀] #压缩文件

findExactlyString.js

//提取图片前缀
function findExactlyString(arr) {
    if (arr.length <= 1) return {
        leg: 0,
        str: '',
        diffArr: arr
    }
    let leg = 0
    let arr00 = arr[0]
    for (let i = 0; i < arr00.length; i++) {
        if (arr.every(x => x[i] == arr00[i])) {
            leg++
        } else {
            break
        }
    }
    let diffArr = arr.map(x => x.substr(leg, x.length))
    return {
        leg: leg,
        str: arr00.substr(0, leg),
        diffArr
    }
}