This article describes the method of JS to realize the text link sensing mouse fade in and out to change color. Share it for your reference. The specific implementation method is as follows:
Copy the code as follows:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>JS implements text link sensing mouse fade in and out to change color</TITLE>
</HEAD>
<BODY>
<script language="javascript" type="text/javascript">
startColor = "#671700"; // Define the link color
endColor = "#D8D1C5"; // Define the color to be gradient to the last
stepIn = 17;
stepOut = 23;
/*
Define whether to automatically gradient all text links, true is yes, false is no
*/
autoFade = true;
/*
Here is the class class: fade in the css style. If true, then you need to add this fade style to the link you want to gradient.
*/
sloppyClass = false;
hexa = new makearray(16);
for(var i = 0; i < 10; i++)
hexa[i] = i;
hexa[10]="a"; hexa[11]="b"; hexa[12]="c";
hexa[13]="d"; hexa[14]="e"; hexa[15]="f";
document.onmouseover = domaineover;
document.onmouseout = domaineout;
startColor = dehexize(startColor.toLowerCase());
endColor = dehexize(endColor.toLowerCase());
var fadeId = new Array();
function dehexize(Color){
var colorArr = new makearray(3);
for (i=1; i<7; i++){
for (j=0; j<16; j++){
if (Color.charAt(i) == hexa[j]){
if (i%2 !=0)
colorArr[Math.floor((i-1)/2)]=eval(j)*16;
else
colorArr[Math.floor((i-1)/2)]+=eval(j);
}
}
}
return colorArr;
}
function domouseover() {
if(document.all){
var srcElement = event.srcElement;
if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))
fade(startColor, endColor,srcElement.uniqueID,stepIn);
}
}
function domouseout() {
if (document.all){
var srcElement = event.srcElement;
if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))
fade(endColor,startColor,srcElement.uniqueID,stepOut);
}
}
function makearray(n) {
this.length = n;
for(var i = 1; i <= n; i++)
this[i] = 0;
return this;
}
function hex(i) {
if (i < 0)
return "00";
else if (i > 255)
return "ff";
else
return "" + hexa[Math.floor(i/16)] + hexa[i%16];}
function setColor(r, g, b, element) {
var hr = hex(r); var hg = hex(g); var hb = hex(b);
element.style.color = "#"+hr+hg+hb;
}
function fade(s,e, element,step){
var sr = s[0]; var sg = s[1]; var sb = s[2];
var er = e[0]; var eg = e[1]; var eb = e[2];
if (fadeId[0] != null && fade[0] != element){
setColor(sr,sg,sb,eval(fadeId[0]));
var i = 1;
while(i < fadeId.length){
clearTimeout(fadeId[i]);
i++;
}
}
for(var i = 0; i <= step; i++) {
fadeId[i+1] = setTimeout("setColor(Math.floor(" +sr+ " *(( " +step+ " - " +i+ " )/ " +step+ " ) + " +er+ " * (" +i+ "/" +
step+ ")),Math.floor(" +sg+ " * (( " +step+ " - " +i+ " )/ " +step+ " ) + " +eg+ " * (" +i+ "/" +step+
")),Math.floor(" +sb+ " * ((" +step+ "-" +i+ ")/" +step+ ") + " +eb+ " * (" +i+ "/" +step+ ")),"+element+");",i*step);
}
fadeId[0] = element;
}
</script>
<p><a href="//www.VeVB.COM">Put the mouse on this text link to view the preview effect</a></p>
</BODY>
</HTML>
I hope this article will be helpful to everyone's JavaScript programming.