javascript - 如何正确使用Array.Splice

Question

如何正确使用Array.Splice？

var myEmptyData = [];
myEmptyData = $.parseJSON('[{
    "m_sPartNumber": "B104-92",
    "m_sJobStep": "0300",
    "m_sQTY": "170.000",
    "m_sRunHrs": "0.1400",
    "m_sRunPriority": "20150403      MAFC8X0114229",
    "m_sMO": "MU43380",
    "m_sAssemblyMO": "MAFC8X0",
    "m_sDesc": "B104-92 TP DWR FRT",
    "m_sTagID": "",
    "m_sWorkCenter": "AL018",
    "isWandOn": "N"
}, {
    "m_sPartNumber": "B228-53",
    "m_sJobStep": "0300",
    "m_sQTY": "21.000",
    "m_sRunHrs": "0.0441",
    "m_sRunPriority": "20150403      MAFDCL0190143",
    "m_sMO": "M085780",
    "m_sAssemblyMO": "MAFDCL0",
    "m_sDesc": "B228-53  VAL",
    "m_sTagID": "",
    "m_sWorkCenter": "AL028",
    "isWandOn": "N"
}, {
    "m_sPartNumber": "B175-93",
    "m_sJobStep": "0300",
    "m_sQTY": "228.000",
    "m_sRunHrs": "0.7296",
    "m_sRunPriority": "20150406      MAFDC60132094",
    "m_sMO": "M947070",
    "m_sAssemblyMO": "MAFDC60",
    "m_sDesc": "B175-93 LF SD",
    "m_sTagID": "",
    "m_sWorkCenter": "AL004",
    "isWandOn": "N"
}, {
    "m_sPartNumber": "B131-85",
    "m_sJobStep": "0300",
    "m_sQTY": "150.000",
    "m_sRunHrs": "0.4500",
    "m_sRunPriority": "20150406      MAFDDJ0162969",
    "m_sMO": "M964230",
    "m_sAssemblyMO": "MAFDDJ0",
    "m_sDesc": "B131-85  LF MTR LEG",
    "m_sTagID": "",
    "m_sWorkCenter": "AL014",
    "isWandOn": "N"
}, {
    "m_sPartNumber": "B175-93",
    "m_sJobStep": "0300",
    "m_sQTY": "228.000",
    "m_sRunHrs": "0.7296",
    "m_sRunPriority": "20150406      MAFDC60132097",
    "m_sMO": "M947130",
    "m_sAssemblyMO": "MAFDC60",
    "m_sDesc": "B175-93 RT SD",
    "m_sTagID": "",
    "m_sWorkCenter": "AL004",
    "isWandOn": "N"
}]');

var myEmptyDataNew = myEmptyData.splice(4, 1);

Answer 1

splice 工作正常(内联在数组上)。

splice 返回删除的项目。

myEmptyData.splice(4, 1);
console.log(myEmptyData);

The splice() method changes the content of an array by removing existing elements and/or adding new elements.

文档:https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/splice

演示:https://jsfiddle.net/tusharj/1ztL1jbd/