Question

我正在尝试给move()一个间隔，这样我的盒子就可以在一个容器中移动但是它不起作用。我列出了我的盒子类，它在<script>内的主索引页面中初始化。盒子已经创建但是没有移动。

//class to add new box object in a container
function Box(element){
var randomx;
var randomy;
var movex;
var movey;
this.element = element;
var divi;
var that = this;
//random number generator
this.randomGenerator = function(low,high){
    var randomgen = Math.floor((Math.random()*high)+low);
    return randomgen;
}
//initializing the variables
this.initial = function(){
    divi = document.createElement('div');
    divi.className = "box";
    randomx = that.randomGenerator(0,950);
    randomy = that.randomGenerator(0,350);
    movex = that.randomGenerator(6,12);
    movey = that.randomGenerator(6,12);
    var maine = that.element;
    maine.appendChild(divi);
} 
//to check for the boundary of the box
this.checkBoundary = function(){
if(randomx>=(950)){
    movex =-(that.randomGenerator(6,12));
    console.log("error1");
}
if(randomx<=0){
    movex=(that.randomGenerator(6,12));
    console.log("error2");
}
if(randomy>=(350)){
    movey= -(that.randomGenerator(6,12));
    console.log("error3");
}
if(randomy<=0){
    movey=(that.randomGenerator(6,12));
    console.log("error4");
}
}
this.move = function(){
    divi.style["left"] = randomx + 'px';
    divi.style["top"] = randomy + 'px';
    that.checkBoundary();
    randomx += movex;
    randomy += movey;
    console.log("randomx =",randomx);
    console.log("randomy =",randomy);
}
//function to initialize other functions
this.init = function(){
    that.initial();
    setInterval(that.move(),10);
}
}

Answer 1

函数setInterval();期望函数作为第一个参数：setInterval(function() { that.move(); }, 10);。

使用setInterval移动某个div

1 个答案: