Javascript 查找特定CSS@keyframes规则
我想用JavaScript调整CSS中特定的Javascript 查找特定CSS@keyframes规则,javascript,css,css-animations,Javascript,Css,Css Animations,我想用JavaScript调整CSS中特定的@关键帧-规则。这一切在以下代码中都非常有效: CSS: JavaScript: function getKeyframeRule(ruleName) { var ss = document.styleSheets, rule, i, x; for (i = 0; i < ss.length; ++i) { if (ss[i].cssRules) { // loop thr
@关键帧-规则。这一切在以下代码中都非常有效:
CSS:
JavaScript:
function getKeyframeRule(ruleName) {
var ss = document.styleSheets,
rule, i, x;
for (i = 0; i < ss.length; ++i) {
if (ss[i].cssRules) {
// loop through all the rules
for (x = 0; x < ss[i].cssRules.length; ++x) {
rule = ss[i].cssRules[x];
if ((rule.type === window.CSSRule.KEYFRAMES_RULE || rule.type === window.CSSRule.WEBKIT_KEYFRAMES_RULE) && rule.name === ruleName) {
return rule;
}
}
}
}
return null;
}
// find keyframes rule
var rule = getKeyframeRule("changecolor");
console.log(rule.cssText);
// adjust keyframes rule
// ...
函数getKeyframeRule(规则名){
var ss=document.styleSheets,
规则i,x;
对于(i=0;i
由于Chrome 43,浏览器支持不固定的CSS动画属性。但是我的代码仍然返回带前缀的关键帧规则@-webkit keyframes changecolor
,因为它也适用于条件((rule.type==window.CSSRule.keyframes|rule | rule.type==window.CSSRule.webkit_keyframes_rule)和&rule.name==ruleName){
选择浏览器实际使用的关键帧规则的更好方法是什么
以下是完整的示例:使用的关键帧规则是最后一个定义的规则。因此,您可以从末尾而不是从开头循环:
for (x = ss[i].cssRules.length - 1; x >= 0; x--) {
rule = ss[i].cssRules[x];
if ((rule.type === window.CSSRule.KEYFRAMES_RULE || rule.type === window.CSSRule.WEBKIT_KEYFRAMES_RULE) && rule.name === ruleName) {
return rule;
}
}
看
for (x = ss[i].cssRules.length - 1; x >= 0; x--) {
rule = ss[i].cssRules[x];
if ((rule.type === window.CSSRule.KEYFRAMES_RULE || rule.type === window.CSSRule.WEBKIT_KEYFRAMES_RULE) && rule.name === ruleName) {
return rule;
}
}