jQuery&js&CSSfunction hasClass(ele,cls) {
return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}
function addClass(ele,cls) {
if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}
function removeClass(ele,cls) {
if (hasClass(ele,cls)) {
var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
ele.className=ele.className.replace(reg,' ');
}
}
function toggleClass(ele,cls) {
if(hasClass(ele,cls)){
removeClass(ele,cls);
}
else
addClass(ele,cls);
}
function changeClass(ele,oldcls,newcls) {
if (!hasClass(ele,newcls)) {
if(hasClass(ele,oldcls)){
removeClass(ele,oldcls);
}
addClass(ele,newcls);
}
}
//call the functions
addClass(document.getElementById("test"),"test");
removeClass(document.getElementById("test"),"test");
toggleClass(document.getElementById("test"),"test");
changeClass(document.getElementById("test"),"oldcls","newcls");
if(hasClass(document.getElementById("test"),"test")){ //do something};
