我正在尝试执行此代码但由于某种原因我无法弄清楚RoundRobin函数将执行onload而不是onclick。我试过删除window.onload或用document.onload替换它。我只想让这一行var selectedTeams = [];
window.onload = function() {
// JavaScript Document
// add selected teams to array
var teamList = document.getElementById("teamDropdown");
teamList.onchange = function addTeams() {
if (selectedTeams.length > 7) {
alert("no more teams")
} else {
var county = document.getElementById("teamDropdown").value;
selectedTeams.push(county);
}
alert("counties selected are: " + selectedTeams);
}
var teamsIn = 0;
teamsIn = selectedTeams.length;
document.getElementById("tableButton").onclick = RoundRobin(teamsIn);
// slideshow.
var imageArray = new Array();
imageArray[0] = new Image()
imageArray[0].src = "Sponsors/aib.png"
imageArray[1] = new Image()
imageArray[1].src = "Sponsors/centra.jpg"
imageArray[2] = new Image()
imageArray[2].src = "Sponsors/eircom.png"
imageArray[3] = new Image()
imageArray[3].src = "Sponsors/etihad.png"
imageArray[4] = new Image()
imageArray[4].src = "Sponsors/liberty.jpg"
imageArray[5] = new Image()
imageArray[5].src = "Sponsors/supervalu.png"
var step = 0;
function slideShow() {
document.getElementById('slideshow').src = imageArray[step].src
if (step < 5)
step++
else
step = 0
setTimeout("slideShow()", 4000)
}
function RoundRobin(teams) {
alert(teams);
var i;
var ret = "";
var round;
var numplayers = 0;
numplayers = parseInt(teams) + parseInt(teams % 2);
numplayers = parseInt(numplayers);
alert(numplayers);
var a = new Array(numplayers - 1);
var alength = a.length;
for (var x = 0; x < (numplayers); x++) {
a[x] = "Team " + (x + 1);
}
if (numplayers != parseInt(teams)) {
a[alength] = "BYE";
}
var pos;
var pos2;
ret = "----- ROUND #1-----<br />"
for (var r1a = 0; r1a < (numplayers / 2); r1a++) {
ret += a[r1a] + " vs. " + a[alength - r1a] + "<br />"
}
for (round = 2; round < alength + 1; round++) {
ret += "<br /><br />----- ROUND #" + round + "-----<br />"
ret += a[0] + " vs. " + a[alength - (round - 1)] + "<br />"
for (i = 2; i < (numplayers / 2) + 1; i++) {
pos = (i + (round - 2))
if (pos >= alength) {
pos = ((alength - pos)) * -1
} else {
pos = (i + (round - 2))
}
pos2 = (pos - (round - 2)) - round
if (pos2 > 0) {
pos2 = (alength - pos2) * -1
}
if (pos2 < (alength * -1)) {
pos2 += alength
}
ret += a[(alength + pos2)]
ret += " vs. " + a[(alength - pos)] + "<br />"
}
}
var text = document.getElementById('fixtures');
text.innerHTML = ret;
return ret
}
// round robin format
}
等待onclick触发器。
App::build(array(
'Controller' => array(
ROOT . '/app/Controller/Api/'
)
));
答案 0 :(得分：6)
发生的事情是你调用函数，然后你将返回值赋给onclick属性。要使事件处理程序起作用，您需要为属性分配一个函数。
在函数表达式中包含调用：
document.getElementById("tableButton").onclick = function(){
RoundRobin(teamsIn);
};