SOURCE

var arr = ["134228.434-145343.386","134190.007-145355.928","134151.912-145368.525"]

function test(val){
    let start = arr.indexOf(val[0]);
    let end = arr.indexOf(val[1]);
    if(start=!'-1'&&end!='-1'){
        return ''
    }
    for(let i=0;i<val.length-1;i++){
        // 起点存在，
        // 在数组指定位置插入
        if(start!='-1'){
            arr.splice(start,0,val[1]);
        }
        // 终点存在，
        if(end!='-1'){
            arr.splice(end,0,val[0]);
        }
    }
            console.log(arr)
}

test(["134190.007-145555.928","134151.912-145368.525"])