Javascript 将选定值与另一个列表中的值进行比较

我想做的是将下拉列表中选择的值涂上焦油，以显示数据结果列表。在中，您可以使用以下下拉列表：

 var body = String.format("{{'__metadata':{{'type':'{0}'}},'Nombre':'{1}','Empresa':'{2}','Correo':'{3}','Area':'{4}','Telefono':'{5}','Mensaje':'{6}'}}",
  GetItemTypeForListName('Contacto'), jQuery("#txtNombreCompleto2").val(), jQuery("#txtNombreEmpresa").val(),jQuery("#exampleInputEmail2").val(),$('#dropOficina2').val(),jQuery("#txtTelefono2").val(),jQuery("#txtMensaje2").val());

My$（'dropOficina2'）.val（）有3个值：“Finanzas”、“Operacion”和“Recursos Humanos” 所以，根据选择的值，它会将一个值返回到主体中

我得到的标题和科雷奥列表如下：

   var query = "?$select=Title,Correo";
    $.ajax({
        url: url + "/_api/web/lists/getbytitle('ContactosCorreos')/items" + query,
        method: 'GET',
        headers: { "Accept": "application/json; odata=verbose" },
        success: function(data) {
            for (var i = 0; i < data.d.results.length; i++) {  
                console.log("Title: "+data.d.results[i].Title);
                console.log("Correo: "+data.d.results[i].Correo);            }
        }}); 

我尝试了这些：但它总是给我发送“标题”和“科雷奥”数组

var selectedvalue=$（“#dropOficina2”）.val（）；
var to=“”；
var query=“？$select=Title，Correo”；
$.ajax({
url:url+“/”api/web/lists/getbytitle（'ContactosCorreos'）/items“+查询，
方法：“GET”，
标题：{“Accept”：“application/json；odata=verbose”}，
成功：功能（数据）{
对于（变量i=0；i

设置“to”变量的条件语句应进入for循环：

var selectedvalue = $("#dropOficina2").val();
var to = "";
var query = "?$select=Title,Correo";
$.ajax({
    url : url + "/_api/web/lists/getbytitle('ContactosCorreos')/items" + query,
    method : 'GET',
    headers : {
        "Accept" : "application/json; odata=verbose"
    },
    success : function (data) {
        for (var i = 0; i < data.d.results.length; i++) {
            console.log("Title: " + data.d.results[i].Title);
            console.log("Correo: " + data.d.results[i].Correo);
            // move conditional statement into for loop
            // check the value of item's title you really only need 
            //to have one condition if your Titles are unique
            if (selectedvalue === data.d.results[i].Title) {
                // access the results by index, just like you 
                //did in the console.log
                to = data.d.results[i].Correo;
            } 
        }
    }
});

---

如果标题是唯一的，则只能得到一个Correo结果。

设置“to”变量的条件语句应进入for循环：

var selectedvalue = $("#dropOficina2").val();
var to = "";
var query = "?$select=Title,Correo";
$.ajax({
    url : url + "/_api/web/lists/getbytitle('ContactosCorreos')/items" + query,
    method : 'GET',
    headers : {
        "Accept" : "application/json; odata=verbose"
    },
    success : function (data) {
        for (var i = 0; i < data.d.results.length; i++) {
            console.log("Title: " + data.d.results[i].Title);
            console.log("Correo: " + data.d.results[i].Correo);
            // move conditional statement into for loop
            // check the value of item's title you really only need 
            //to have one condition if your Titles are unique
            if (selectedvalue === data.d.results[i].Title) {
                // access the results by index, just like you 
                //did in the console.log
                to = data.d.results[i].Correo;
            } 
        }
    }
});

如果标题是唯一的，那么您只能得到一个Correo结果

var selectedvalue = $("#dropOficina2").val();
var to = "";
var query = "?$select=Title,Correo";
$.ajax({
    url : url + "/_api/web/lists/getbytitle('ContactosCorreos')/items" + query,
    method : 'GET',
    headers : {
        "Accept" : "application/json; odata=verbose"
    },
    success : function (data) {
        for (var i = 0; i < data.d.results.length; i++) {
            console.log("Title: " + data.d.results[i].Title);
            console.log("Correo: " + data.d.results[i].Correo);
            // move conditional statement into for loop
            // check the value of item's title you really only need 
            //to have one condition if your Titles are unique
            if (selectedvalue === data.d.results[i].Title) {
                // access the results by index, just like you 
                //did in the console.log
                to = data.d.results[i].Correo;
            } 
        }
    }
});

var query = "?$select=Correo&$filter=Title eq '" + selectedvalue +"'";