div1.click=function move_right(a){
var speed=3;
var demo=document.getElementById('test');
if(a)
{
var MyMar=setInterval(function(){
if(parseInt(demo.style.left)>100){clearInterval(MyMar);}
else{
demo.style.left=parseInt(demo.style.left)+10+'px';}},speed);
}
}
div2.click=function move_right(a){我是用两个按钮来控制图片集的左右移动,当点击向左移动的按钮时,很快点击向右移动的按钮时,需要对向左移动的setInterval事件做clearInterval处理,我该如何在div2.click做处理
var speed=3;
var demo=document.getElementById('test');
if(a)
{
var MyMar=setInterval(function(){
if(parseInt(demo.style.left)>100){clearInterval(MyMar);}
else{
demo.style.left=parseInt(demo.style.left)+10+'px';}},speed);
}
}
div2.click=function move_right(a){我是用两个按钮来控制图片集的左右移动,当点击向左移动的按钮时,很快点击向右移动的按钮时,需要对向左移动的setInterval事件做clearInterval处理,我该如何在div2.click做处理
var demo=document.getElementById('test');
var border=demo.setoffWidth;
var MyMar_left=setInterval(function(){if(parseInt(demo.style.left)>100){clearInterval(MyMar);}
else{demo.style.left=parseInt(demo.style.left)+10+'px';}},speed);
var MyMar_right=setInterval(function(){if(parseInt(demo.style.left)<(800-border)){clearInterval(MyMar1);}else{demo.style.left=parseInt(demo.style.left)-10+'px';}},speed);
var control_l=1,control_r=1;
function move_right_(){
if(control_r){
clearInterval(MyMar_left);
setInterval(function(){if(parseInt(demo.style.left)>100){clearInterval(MyMar);}
else{demo.style.left=parseInt(demo.style.left)+10+'px';}},speed);
control_r=0;
control_l=1;
}
}
function move_left_(){
if(control_l){
clearInterval(MyMar_right);
setInterval(function(){if(parseInt(demo.style.left)<(800-border)){clearInterval(MyMar1);}else{demo.style.left=parseInt(demo.style.left)-10+'px';}},speed);
control_l=0;
control_r=1;
}
}
修改过报错,说demo=null;
就第三行代码报错
怎么回事