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dalete merge && class operating methods

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陈嘉涵
2017-08-22 19:43:15 +08:00
parent 9bb88ee295
commit bc169e905a
7 changed files with 21 additions and 124 deletions
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96
packages/utils/dom.js
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@@ -1,101 +1,11 @@
import Vue from 'vue';
const isServer = Vue.prototype.$isServer;
const trim = function(string) {
return (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, '');
};
export function hasClass(el, cls) {
if (!el || !cls) return false;
if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.');
if (el.classList) {
return el.classList.contains(cls);
} else {
return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;
}
};
export function addClass(el, cls) {
if (!el) return;
var curClass = el.className;
var classes = (cls || '').split(' ');
for (var i = 0, j = classes.length; i < j; i++) {
var clsName = classes[i];
if (!clsName) continue;
if (el.classList) {
el.classList.add(clsName);
} else {
if (!hasClass(el, clsName)) {
curClass += ' ' + clsName;
}
}
}
if (!el.classList) {
el.className = curClass;
}
};
export function removeClass(el, cls) {
if (!el || !cls) return;
var classes = cls.split(' ');
var curClass = ' ' + el.className + ' ';
for (var i = 0, j = classes.length; i < j; i++) {
var clsName = classes[i];
if (!clsName) continue;
if (el.classList) {
el.classList.remove(clsName);
} else {
if (hasClass(el, clsName)) {
curClass = curClass.replace(' ' + clsName + ' ', ' ');
}
}
}
if (!el.classList) {
el.className = trim(curClass);
}
};
export const once = function(el, event, fn) {
var listener = function() {
const listener = function() {
if (fn) {
fn.apply(this, arguments);
}
off(el, event, listener);
el.removeEventListener(event, listener);
};
on(el, event, listener);
el.addEventListener(event, listener);
};
export const on = (function() {
if (!isServer && document.addEventListener) {
return function(element, event, handler) {
if (element && event && handler) {
element.addEventListener(event, handler, false);
}
};
} else {
return function(element, event, handler) {
if (element && event && handler) {
element.attachEvent('on' + event, handler);
}
};
}
})();
export const off = (function() {
if (!isServer && document.removeEventListener) {
return function(element, event, handler) {
if (element && event) {
element.removeEventListener(event, handler, false);
}
};
} else {
return function(element, event, handler) {
if (element && event) {
element.detachEvent('on' + event, handler);
}
};
}
})();