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| /*获取网址参数*/
getURL(name){
var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
var r = decodeURI(window.location.search).substr(1).match(reg);
if(r!=null) return r[2]; return null;
}
/*获取全部url参数,并转换成json对象*/
getUrlAllParams (url) {
var url = url ? url : window.location.href;
var _pa = url.substring(url.indexOf('?') + 1),
_arrS = _pa.split('&'),
_rs = {};
for (var i = 0, _len = _arrS.length; i < _len; i++) {
var pos = _arrS[i].indexOf('=');
if (pos == -1) {
continue;
}
var name = _arrS[i].substring(0, pos),
value = window.decodeURIComponent(_arrS[i].substring(pos + 1));
_rs[name] = value;
}
return _rs;
}
/*删除url指定参数，返回url*/
delParamsUrl(url, name){
var baseUrl = url.split('?')[0] + '?';
var query = url.split('?')[1];
if (query.indexOf(name)>-1) {
var obj = {}
var arr = query.split("&");
for (var i = 0; i < arr.length; i++) {
arr[i] = arr[i].split("=");
obj[arr[i][0]] = arr[i][1];
};
delete obj[name];
var url = baseUrl + JSON.stringify(obj).replace(/[\"\{\}]/g,"").replace(/\:/g,"=").replace(/\,/g,"&");
return url
}else{
return url;
}
}
/*获取十六进制随机颜色*/
getRandomColor () {
return '#' + (function(h) {
return new Array(7 - h.length).join("0") + h;
})((Math.random() * 0x1000000 << 0).toString(16));
}
/*图片加载*/
imgLoadAll(arr,callback){
var arrImg = [];
for (var i = 0; i < arr.length; i++) {
var img = new Image();
img.src = arr[i];
img.onload = function(){
arrImg.push(this);
if (arrImg.length == arr.length) {
callback && callback();
}
}
}
}
/*音频加载*/
loadAudio(src, callback) {
var audio = new Audio(src);
audio.onloadedmetadata = callback;
audio.src = src;
}
/*DOM转字符串*/
domToStirng(htmlDOM){
var div= document.createElement("div");
div.appendChild(htmlDOM);
return div.innerHTML
}
/*字符串转DOM*/
stringToDom(htmlString){
var div= document.createElement("div");
div.innerHTML=htmlString;
return div.children[0];
}
/**
* 光标所在位置插入字符，并设置光标位置
*
* @param {dom} 输入框
* @param {val} 插入的值
* @param {posLen} 光标位置处在 插入的值的哪个位置
*/
setCursorPosition (dom,val,posLen) {
var cursorPosition = 0;
if(dom.selectionStart){
cursorPosition = dom.selectionStart;
}
this.insertAtCursor(dom,val);
dom.focus();
console.log(posLen)
dom.setSelectionRange(dom.value.length,cursorPosition + (posLen || val.length));
}
/*光标所在位置插入字符*/
insertAtCursor(dom, val) {
if (document.selection){
dom.focus();
sel = document.selection.createRange();
sel.text = val;
sel.select();
}else if (dom.selectionStart || dom.selectionStart == '0'){
let startPos = dom.selectionStart;
let endPos = dom.selectionEnd;
let restoreTop = dom.scrollTop;
dom.value = dom.value.substring(0, startPos) + val + dom.value.substring(endPos, dom.value.length);
if (restoreTop > 0){
dom.scrollTop = restoreTop;
}
dom.focus();
dom.selectionStart = startPos + val.length;
dom.selectionEnd = startPos + val.length;
} else {
dom.value += val;
dom.focus();
}
}
|
