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[英]Is there a better looking way to compare 3 values that may or may not be 0 in Javascript?
[英]Setting Multiple Label Values -Looking For a Better Way
我正在使用此代碼設置一些 asp.net 標簽值。 每次標簽值更改時,它們都會更新。 有 25 個標簽,這段代碼非常重復,對我來說似乎效率很低。 有沒有辦法遍歷所有 25 個標簽並在 jQuery 或標准 javascript 中為每個標簽設置Q#_Score_Possible
和Q#_Score variables
?
let Q1_Score_Possible;
let Q1_Score;
Q1_Score_Possible = $('#MainContent_grdScoring_lblPoints_Possible_0').val();
$('#MainContent_grdScoring_hiddenPoints_Possible_0').val(Q1_Score_Possible); //hidden field for database scoring
Q1_Score = $('#MainContent_grdScoring_lblScore_0').val();
$('#MainContent_grdScoring_hiddenScore_0').val(Q1_Score); //hidden field for database scoring
let Q2_Score_Possible;
let Q2_Score;
Q2_Score_Possible = $('#MainContent_grdScoring_lblPoints_Possible_1').val();
$('#MainContent_grdScoring_hiddenPoints_Possible_1').val(Q2_Score_Possible); //hidden field for database scoring
Q2_Score = $('#MainContent_grdScoring_lblScore_1').val();
$('#MainContent_grdScoring_hiddenScore_1').val(Q2_Score); //hidden field for database scoring
let Q3_Score_Possible;
let Q3_Score;
Q3_Score_Possible = $('#MainContent_grdScoring_lblPoints_Possible_2').val();
$('#MainContent_grdScoring_hiddenPoints_Possible_2').val(Q3_Score_Possible); //hidden field for database scoring
Q3_Score = $('#MainContent_grdScoring_lblScore_2').val();
$('#MainContent_grdScoring_hiddenScore_2').val(Q3_Score); //hidden field for database scoring
考慮以下。
$("input[id^='MainContent_grdScoring_lblPoints_Possible_']").each(function(i, el){
$("#MainContent_grdScoring_hiddenPoints_Possible_" + i).val($(el).val())
});
這會遍歷選擇器中的每個元素。 查看更多: https ://api.jquery.com/each/
使用索引,我們可以定位相應的隱藏元素。
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