Question

我想在第一个def route: Route = { import CorsDirectives._ import Directives._ // Your CORS settings val corsSettings = CorsSettings.defaultSettings // Your rejection handler val rejectionHandler = corsRejectionHandler withFallback RejectionHandler.default // Your exception handler val exceptionHandler = ExceptionHandler { ... } // Combining the two handlers only for convenience val handleErrors = handleRejections(rejectionHandler) & handleExceptions(exceptionHandler) // Note how rejections and exceptions are handled *before* the CORS directive (in the inner route). // This is required to have the correct CORS headers in the response even when an error occurs. handleErrors { cors(corsSettings) { handleErrors { ... // your business route here } } } }

的每次迭代之间添加一个500毫秒的暂停

我不确定如何应用此解决方案： How to add pause between each iteration of jQuery .each()?

根据我的具体情况：

$.each

Answer 1

你可以将你的iterateAddresses（）函数

中的其他函数分开

function iterateAddresses () {

  var time = 500;
  // Then get a random number between 500 and 599    
  $.each( addresses_google, function( index, value ) {
        var ram = Math.floor(Math.random() * (599-time+1)) + time;
        setTimeout( "OtherFunction("+index+","+value+");", ram);
  }); // end each google_address

}; // end iterateAddresses


function OtherFunction(index, value)
{
    var service = new google.maps.DistanceMatrixService();

    service.getDistanceMatrix(
      {
        origins: [origin],
        destinations: value,//addresses_google,
        travelMode: 'DRIVING'
      },
      callback
    );

    function callback(response, status) {
      var origins = response.originAddresses;
      var destinations = response.destinationAddresses;
      for (var i = 0; i < origins.length; i++) {
        var results = response.rows[i].elements;
        for (var j = 0; j < results.length; j++) {
          var element = results[j];
          if(element.status == "NOT_FOUND"){
            var distance = 0;
          } else {
            var distance = element.distance.value;
          }
          var from = origins[i];
          var to = destinations[j];
          if(distance > radius){
            // Store postids in array
            postids_to_hide.push(
              addresses_postids[index][j]
            );
            // Hide elements where postid is in the postids_to_hide arrays
            $.each( postids_to_hide, function( index, value ) {
              $(".main_short_post_div").filter(function(){
                return $(this).attr('data-post-id') === value;
              }).hide();
            });
          } // end if d < r
        } // end for j
      } // end for i
    } // end callback function
}

iterateAddresses();

Answer 2

function asyncForEach(arr, cb) {
    return arr.reduce((p,c)=>{
        return p.then(()=>cb(c));
    }, Promise.resolve());
}
function wait(ms) {
    return ()=>new Promise(resolve=>setTimeout(resolve, ms));
}

const DELAY = 500; //ms
function iterateAddresses() {
    return asyncForEach(addresses_google, address => 
      getDistanceMatrix(address)
        .then(processResult)
        .then(wait(DELAY)));
}

iterateAddresses();

getDistanceMatrix是您提供给$.each的函数的promisified版本。

processResult是callback的宣传版。

使用setTimeout和jQuery

2 个答案: