Concerning the usage of i values within Javascript loops

As a newcomer to Javascript, I have a basic question. I am attempting to create a for loop where new variables are generated based on the value of i. How can I dynamically change variable names using the i value (without resorting to an array)? For instance, in the code snippet below, my aim is to produce top1, top2, left1, left2, and so on.


var i;

for (i=1; i<3; i++) {

    var top'i'=Math.random(); top'i'=450*top-150;

    var left'i'=Math.random(); left'i'=left*1150;
    
    document.getElementById("image'i'").style.top=top'i'+"px";
    
    document.getElementById("image'i'").style.left=left'i'+"px";

    document.getElementById("image'i'").style.display="block";

}
javascriptfor-loopsubscript

Answer №1

If you want to position images randomly on a page, you can achieve this using the following JavaScript code snippet:

for (var i=1; i<3; i++) {
    var top = Math.random()*450 - 150,
        left = Math.random()*1150,
        el = document.getElementById("image" + i);
    el.style.top = top + "px";
    el.style.left = left + "px";
    el.style.display="block";
}

Each time this code is run, it will set random positions for specified images on the page.

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