options = $.extend({},defaultPara,options);不太明白~
options = $.extend({},defaultPara,options);
慕容子一
2019-07-10
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2019-07-10
就是將括號(hào)里面的options里面的數(shù)據(jù)覆蓋defaultPara里面的數(shù)據(jù)，再將覆蓋后的結(jié)果存放在{}里面
例如：括號(hào)里面的options = { name: "zhangsan", age: 10 }
defaultPara = { name: "lisi", age: 20, sex: "男", score: 99 }
得到結(jié)果的options = { name: "zhangsan", age: 10, sex: "男", score: 99 }
2019-10-25
//擴(kuò)展對(duì)象函數(shù)
function extend() {
//不知道有幾個(gè)參數(shù),把參數(shù)賦值給變量，根據(jù)參數(shù)的數(shù)量來(lái)執(zhí)行不同的函數(shù)
var obj = arguments[0];
var destination = arguments[1];
var source = arguments[2];
//如果參數(shù)有3個(gè)的情況下
if (obj && destination && source){
if (typeof destination == "object" && typeof source == "object"){
//console.log(Object);
for (var property in destination){
obj[property] = destination[property];
}
for (var property in source){
obj[property] = source[property];
}
}
}
//如果參數(shù)有2個(gè)的情況下
if (obj && destination){
if (typeof destination == "object"){
//console.log(Object);
for (var property in destination){
obj[property] = destination[property];
}
}
}
return obj;
}
options = extend({},defaults,options);
這個(gè)功能寫(xiě)的不完整好多判斷沒(méi)加，主要用來(lái)練習(xí)JS的，湊合用......
應(yīng)該類似函數(shù)有3個(gè)參數(shù)時(shí)執(zhí)行方法