03 2018 档案
对象和数组赋值是否会影响旧值的方法
摘要:对象赋值: 1.var objOld = {a:1,b:2}, objNew = objOld; objOld.a = 5; 此时输出:objOld = {a:5,b:2}; objNew = {a:5,b:2}; 说明修改objNew 的值会影响objOld 的值 2.var objOld = {
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websocket
摘要://websocket推送 wsFn() { let that = this, baseInfo = that.$store.state.baseInfo, url = "";//websocket的url if("WebSocket" in window) { let ws = new WebSo
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slice 与 splice 的区别
摘要:slice: 定义一个数组:let b = ['a','b','c','d','e'] b:["a", "b", "c", "d", "e"] b.slice(3,4) :["d"] 截取[3,4)的数组,但是b的值不变 此时b的值为: b:["a", "b", "c", "d", "e"] spl
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vue启动时候报错
摘要:使用vue时,在已经安装模块完毕的情况下,依旧会报错,如: Module build failed: Error: %1 is not a valid Win32 application. 这个时候只需要重新安装node-sass,命令如下: cnpm install node-sass --sav
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