How to solve the problem of conflicting scrolling codes between two images on a page

Why can't the picture flow and display after I copy the two pieces of code at the same time on the homepage?

Copy code The code is as follows:

<SCRIPT> var speed=25 demo2.innerHTML=demo1.innerHTML function Marquee1(){ if(demo2.offsetWidth-demo.scrollLeft<=0) demo.scrollLeft-=demo1 .offsetWidth else{ demo.scrollLeft } } var MyMar=setInterval(Marquee1,speed) demo.onmouseover=function() {clearInterval(MyMar)} demo.onmouseout=function() {MyMar=setInterval(Marquee1,speed)} </SCRIPT>

Since these two pieces of code are exactly the same, a conflict occurs. Simply modify the code of another piece of code. The areas marked in red need to be modified.
You try:

Copy the code The code is as follows:

 
<script> <br>var speed=25 <br>gundong2.innerHTML=gundong1.innerHTML <br>gundong.scrollLeft=gundong.scrollWidth <br>function Marquee1(){ <br>if(gundong.scrollLeft<=0) <BR>gundong.scrollLeft =gundong2.offsetWidth <BR>else{ <BR>gundong.scrollLeft- - <BR>} <BR>} <BR>var MyMar1=setInterval(Marquee1, speed) <BR>gundong.onmouseover=function() {clearInterval(MyMar1)} <BR>gundong.onmouseout=function() {MyMar1= setInterval(Marquee1, speed)} <BR></script>

Related labels：

Picture scroll

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How to solve the problem of conflicting scrolling codes between two images on a page_javascript skills